July 2019 – Page 3 – CNC Machining & Turning, Milling, Metal parts

The Difference of Material Selection between Electric Bolt and Common Bolt

The difference between electric bolt and general bolt is different in terms of appellation and natural function. The acceptable load of general tower bolt and electric bolt is larger than that of general bolt of the same standard.

1. Requirements for mechanical function, especially strength of power bolt data. Some power bolts have higher demand intensity, so choose the power bolt data with higher strength.

2. Requirements of working conditions on anti-corrosion function of data. Some power bolts in standard parts network are used on products with strong corrosion function, which requires us to select power bolt wires with strong corrosion resistance function.

3. Requirements of working temperature on heat-resistant function (high temperature strength, anti-oxidation function) of data. Some power bolts are used in high temperature working conditions, which requires us to select high temperature resistant power bolt data.

4. Requirements for data processing function in production technology. In terms of production technology, some electric bolt wires are better processed, some are more difficult, and the hardness is harder in all aspects. This requires us to select the appropriate hardness of the electrical bolt data, which is conducive to processing and production.

5. Other factors, such as weight, price and purchase, should be taken into account. Power bolt’s own weight, price, purchase and other factors affect the selection of power bolt data. Proper consideration of these aspects may be better to select power bolt data.

Power bolt fasteners have great endurance. The cutting edges of power bolts and grinding wheel Abrasives have relatively large negative rake angles. The debris in grinding process is not simply cut off. The cutting resistance is large, kneading and conflict are severe. The grinding force per unit area is very large, and the grinding temperature can reach 1000 ~1500 C. Together, under the effect of high temperature and high pressure, abrasive debris generally adheres to the grinding wheel, filling the space between the abrasive grains, which will also make the abrasive grains lose the cutting effect. The types of power bolt fasteners are different, and then the situation of grinding wheel blockage is different. For example, grinding resistance fasteners and heat-resistant power bolt fasteners, the phenomenon of adhesion and blockage is more severe than 1Cr18NiTi, while 1Cr13, 2Cr13 and other martensitic fasteners are lighter.

Basic overview of automobile die

The main component of automobile die is panel die. This kind of die is mainly cold stamping die. In a broad sense, “automobile die” is the general name of the die for manufacturing all parts of the automobile. For example, stamping mold, injection mold, forging mold, casting wax mold, glass mold and so on.

The stamping parts of automobile body are generally divided into covering parts, beam frame parts and general stamping parts. The stamping parts which can clearly express the image characteristics of automobile are automobile panels. Therefore, the more specific automobile die can be said to be “automobile panel stamping die”. Abbreviated as automobile panel die. For example, the trimming die for the front door outer panel, the punching die for the front door inner panel, etc.

Of course, not only the body of the car has stamping parts. Dies for all stamping parts on automobiles are called “automobile stamping dies”. To sum up, it is:

1. The automobile die is the general name of the die for manufacturing all the parts on the automobile.

2. The automobile stamping die is the die for stamping all the stamping parts on the automobile.

3. The stamping die for automobile body is the die for stamping all stamping parts on automobile body.

4. The stamping die for automobile panels is the die for stamping all automobile panels.

Now, when we talk about automobile die, it seems that we all refer to automobile panel die. In order not to be confused with the generalized automobile die, it is better to use automobile panel die instead of automobile die when posting.

There are many kinds of stamping dies. The stamping dies are classified according to their working properties, die structure and die materials.

Why is the time limit of international wire transfer fast or slow

Telegraphic transfer is a method of settlement adopted in many international trade. It is very popular with both sides of the trade because of its simplicity and rapidity. But there are also some problems when using telegraphic transfer settlement method. For example, how long is the time for international telegraphic remittance to arrive at accounts? This is a problem that foreign trade enterprises often encounter when they use telegraphic remittance to settle accounts.

For some large enterprises, it is normal to transfer money every day. It is not only domestic but also foreign. It is not surprising to collect so much money every day that we can not tell which way of remittance. It is more convenient to collect and pay by T/T. In addition, T/T has the advantages of fast arrival and safety, which is favored by the majority of enterprises.

Why is international wire transfer so entangled?

A Great Analysis of the International Telegraphic Transfer Problem

1. International wire transfer is accomplished through SWIFT network, which can not be achieved in real time.

CNAPS liquidation system for RMB in China, ACH and Fedwire liquidation system in the United States, and SEPA liquidation system for PanPay euro currency. These liquidations are all transfers between local currencies. There is no automatic clearing system for international remittances. It relies on SWIFT system. Banks complete the clearing by sending inter-bank telegrams. It involves a large number of manual processing, unable to achieve real-time accounts.

2. The time limit of international wire transfer is usually 3-5 working days.

Because international wire transfer involves a large number of manual operations, and the SWIFT system does not work on weekends, if it happens on weekends, the time limit will be delayed. Therefore, the time limit of international wire transfer is usually 3-5 working days. For the small partners who are used to second arrival at home, the time limit is really worrying.

3. The financial links of international remittances are very complex, and the reasons for non-arrival need to be specifically investigated.

A remittance from the remittance to the entry, through the remittance bank, intermediary bank (sometimes more than one), the collection bank and many other links, each link of the bank has its own wind control compliance checks. The remittance has not arrived at the account, which link is the card? It needs specific analysis. It can not be simply attributed to the problem of the receiving bank.

Correct Opening Way of International Telegraphic Transfer Accounting

1. Calculate the correct aging. When we calculate the time limit, we must deduct weekends and holidays.

2. Query after at least 3 working days (weekends excluded).

3. Provide MT103 message as far as possible when checking accounts. The water bill does not determine the execution time of this fund. MT103 is a bank customer’s remittance format. It has information about the remitter, the name of the recipient and the account. Only when you get these details can you indicate that the bank has executed the remittance.

Account checking needs the cooperation of remittance bank. The fund card is in the middle Bank of remittance bank or remittance bank. The remittance bank can not know where the fund is going, so it needs to be traced by remittance bank. Reasonable face, positive communication can solve. Wish you a smooth receipt and a lot of orders!

New Registered Foreign Trade Enterprises

Finder is an effective inquiry tool to help international freight forwarders find customers. Through the analysis and collation of the massive freight data of all import and export enterprises in China, the freight forwarding enterprises can accurately understand: the cargo route, the scale and the type of freight. It matches with the advantages of freight forwarding enterprises and makes use of big trade data to achieve precise marketing.

Advantages of Aluminum Alloy Logo Laser Engraving Machine!

Aluminum alloy laser engraving machines with different configurations can be provided according to the needs of customers. The laser engraving machine for aluminium alloy can achieve the effects of black, white, deep engraving and shallow engraving on aluminium alloy products. It can engrave photographs, patterns, characters, two-dimensional codes, serial numbers, symbols, anti-counterfeiting codes, codes, bar codes on silver jewelry, jewelry, hardware products, metal parts, stainless steel, aluminium alloy, plastic products, etc. The Yintao laser equipment has the advantages of fast engraving speed, high production efficiency, long service life, simple operation, zero consumables materials only need electricity, pattern and text. Words can be modified at will, saving labor, safe and environmental protection, zero pollution, and engraved words and patterns can not fade and fall off for a long time.

Aluminum alloy is one of the most widely used non-ferrous metal structural materials in industry. It has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipping and chemical industry. With the rapid development of industrial economy, the demand for welded structural parts of aluminium alloy is increasing day by day, which makes the research on weldability of aluminium alloy deepen. Aluminum alloy is the most widely used alloy at present. ?

Aluminum alloy has low density but high strength, close to or over high quality steel, good plasticity, and can be processed into various profiles. It has excellent electrical conductivity, thermal conductivity and corrosion resistance. It is widely used in industry, and its usage is second only to steel. Some aluminium alloys can obtain good mechanical properties, physical properties and corrosion resistance by heat treatment. These aluminium alloy products will be engraved with LOGO trademarks, text patterns, characters, codes, and now businesses are using laser engraving to complete. Laser engraving can be used to engrave products without fading or falling off.

Maintenance of Particle Packing Machine

Maintenance of granular packaging machine is essential for long-term use.

Parts lubrication

1. The tank part of the machine is equipped with an oil gauge, which should be refueled once before starting. It can be added according to the temperature rise and operation of the bearings.

2. The worm gear box must store the oil for a long time. The oil level is that the worm wheel invades the oil. If it is used regularly, it must change the new oil every three months. There is an oil plug at the bottom of the tug, which can be used for oil discharge.

3. When refueling the machine, do not let the oil spill out of the cup, let alone flow around the machine and on the ground. Because oil can easily pollute materials and affect product quality.

Maintenance instructions

1. Check the machine parts regularly and once a month to check whether the movable parts such as worm wheel, worm, bolt on lubricating block and bearing rotate flexibly and wear. If the defect is found, it should be repaired in time and not be used reluctantly.

2. The machine should be used in a dry and clean room. It should not be used in places containing acids in the atmosphere or other corrosive gas flow to the body.

3. When the machine is finished or stopped, the rotary drum should be taken out for cleaning and cleaning the remaining powder in the bucket, and then installed to prepare for the next use.

4. If the machine is out of service for a long time, it must be wiped and cleaned all over the machine. The smooth surface of the machine parts should be coated with rust-proof oil and covered with cloth canopy.

Cleaning Method of Sewing Machine

(1) Cleaning of the feeding teeth: Remove the screw between the needle plate and the feeding teeth, remove the hair and dust, and add a small amount of sewing oil.

(2) Shuttle bed cleaning: Shuttle bed is the core of sewing machine work, but also the most vulnerable place to failure, so it is necessary to often remove dirt and add a small amount of sewing oil.

(3) Cleaning of other parts: The surface of the sewing machine and all parts of the panel should be cleaned regularly and kept clean.

Oiling and lubricating method of sewing machine:

(1) refueling parts: oil holes on the head, lubricating upper axle and parts connected with the upper axle; parts in the panel and moving parts connected with each other; lubricating foot and needle rods and parts connected with them; wiping off the moving parts of the lower parts of the machine plate and adding less oil.

(2) Attentions should be paid to the maintenance of sewing machines: after work, insert the needle into the pinhole plate, lift the foot, and cover the head with the hood to prevent dust from intruding into the machine; when starting work, check the main parts first, how to step up, whether there are any special sounds, whether the needle is normal, and so on. If abnormal phenomena are found, the machine should be repaired in time; After that, a major overhaul should be carried out. If the worn parts are found, new ones should be replaced.

Process of customized screw packing machine

First of all, understand the purpose of packaging. And their own requirements. Provide to packing machine manufacturer according to requirement.

For example, a screw wrapper needs a package of several specifications (the largest package) and a package of several other specifications. The style of the bag to be packed.

This will be given to the packing machine manufacturer. The manufacturer will give you detailed plans and quotations according to your requirements. Generally, there are two options for you to choose.

2. Machine characteristics of screw packing machine

1. Use Mitsubishi PLC touch screen control system, support Chinese and English, simple and practical operation.

2. Screw packaging machine realizes printing two-dimensional code, bar code, batch number and other information on the packaging film of the packaging machine.

3. The vibration disc produced by the screw packing machine is more wear-resistant, will not wear any material surface, and the noise generated is the smallest. The weight of the whole set of vibrating discs varies from 60 to 200 kg. The heavier the chassis, the more stable and smooth the material discharged, and the greater the overall load gravity, which is also the first one in the industry.

The counting method of screw packing machine adopts precise counting control device to ensure the accuracy of counting. Choose the best counting system according to the customer’s specific material.

4. Each set of vibrating disc of screw packing machine is equipped with full stop, alarm or stop device to ensure the accuracy of each bag. The equipment has self-diagnostic function.

When a fault occurs, it can automatically alarm or stop (alarm or stop user can choose), and it has several emergency stop buttons, which is convenient for operation.

5. The screw packing machine can automatically arrange, count, fill, seal, package and transport materials. The number of packages can be adjusted at will, the number of bags can be controlled by itself, the number of packages can be displayed automatically, and the workload of the machine can be counted conveniently.

6. The screw packing machine has reliable safety protection function (all dangerous parts are equipped with safety protection device).

7. The screw packing machine is highly compatible and can meet the packaging requirements of more than 90% parts of different shapes on the market.

8. The screw packing machine adopts two sets of tracks to be installed in the chain bucket. The chain bucket is more stable, fast, safe and low noise in the process of advancing. The stainless steel fuselage is clean and tidy in appearance, and the conveying height of the traditional on-line chain bucket is thoroughly solved by adopting the conveying system of reducing the height.

9. The screw packing machine has automatic detection of material shortage and material shortage. When material shortage and material shortage occur, the equipment will stop and alarm automatically. Each feeder in the equipment can be opened or closed at will to facilitate production needs.

10. The screw packing machine has high working efficiency, up to 50 packages per minute, saves more than 90% of the labor, and the highest feeding speed of a single work station can reach 500 pieces per minute. (Specific packing speed depends on material shape, technology and other factors)

11. According to the actual needs of customers, the sorter can be added and controlled by PLC alone, which further ensures the accuracy of quantity and the fastest detection speed can reach more than 100 packages per minute.

11. Screw packing machine can add vibration disc feeder, vibration disc sound insulation box, bag punching device, bag labeling machine, ordinary typewriter, intelligent typewriter, finished product conveyor, weight sorter, box opener, box loader and other equipment according to customer’s requirements.

Comparisons of Cylinder Application Situations

Pneumatic and electric systems are not mutually exclusive. On the contrary, it’s just a question of different requirements. The advantages of pneumatic actuators are obvious. When faced with harsh environmental conditions such as dust, grease, water or detergent, pneumatic actuators are more adaptable to harsh environment and very durable. Pneumatic actuator is easy to install, can provide a typical grasp function, cheap and easy to operate.

When the force increases rapidly and needs precise positioning, the electric driver with servo motor has advantages. For applications requiring precise, synchronous operation, adjustable and specified positioning programming, electric driver is the best choice. The electric drive system composed of servo or stepping motor with closed-loop positioning controller can supplement the shortcomings of pneumatic system.

From the point of view of technology and use cost, the cylinder has obvious advantages, but in actual use, which technology should be chosen for driving control, or should be considered comprehensively from multiple factors. Modern control systems are becoming more and more complex and sophisticated. It is not a driving control technology that can satisfy various control functions of the system. Cylinders can be used in various harsh working environments, such as explosion-proof, dust-proof or humid conditions.

Electric actuators are mainly used in applications requiring precise control. Now the flexibility requirement of automation equipment is constantly improving. The same equipment often needs to adapt to the processing needs of different size workpieces. Actuators need multi-point positioning control, and precise control or synchronous tracking of the speed and torque of the actuators. These traditional pneumatic control is impossible. Implemented, and the electric actuator can be very easy to achieve such control. It can be seen that the cylinder is more suitable for simple motion control, while the electric actuator is mostly used for precise motion control occasions.

Application of Steel Castings

Because of the characteristics of steel castings, almost all industrial departments need to use steel castings. They are widely used in ships and vehicles, construction machinery, construction machinery, power plant equipment, mining machinery and metallurgical equipment, aerospace equipment, oil wells and chemical equipment. As for the application of steel castings in various industrial sectors, due to the different specific conditions in different countries, the situation may be quite different.

There are many kinds of steel castings. This paper briefly describes the use of steel castings in several major industrial sectors.

1. Power plant equipment

Power plant equipment is a high-tech product. Its main parts are running continuously for a long time under high load. Many parts of thermal power plant and nuclear power plant equipment also need to withstand the corrosion of high temperature and high pressure steam, so the reliability of parts and components is very strict. Casting steel can meet these requirements to the maximum extent and is widely used in power plant equipment.

2. Railway locomotives and vehicles

Railway transportation is closely related to people’s life and property safety, therefore. Safety is very important. Some key components of locomotive and vehicle, such as wheels, side frames, bolsters, couplers, etc., are traditional steel castings.

Railway turnout is a component that bears strong impact and friction. Its working condition is very bad and its shape is very complex.

3. Construction, construction machinery and other vehicles

The working conditions of construction machinery and construction machinery are very poor. Most parts bear high loads or need to endure impact wear. A large part of them are steel castings, such as driving wheels, load-bearing wheels, rocker arms and crawler plates in the action system.

Generally, steel castings are seldom used in automobiles, but the moving parts of special off-road vehicles and heavy trucks also use a lot of steel castings.

The characteristics of new bearing grinding process are briefly introduced.

Bearing is an important part of modern mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotating accuracy. Rolling bearings are generally composed of outer ring, inner ring, rolling element and cage. In bearing production, grinding is the most complex process. Therefore, how to use new technology and technology to finish grinding process with high precision, high efficiency and low cost is the main task of grinding process for one of the key processes in bearing production. Following is a brief introduction of the characteristics of the new bearing grinding process in Yida Borun Petrochemical Company.

I. Characteristics of New Bearing Grinding
(1) Grinding Technology of High Speed Bearing
High-speed grinding can achieve the two goals of modern manufacturing technology to improve quality and efficiency. In high-speed grinding, the grinding wheel should not only have enough strength, but also have good grinding performance to achieve high grinding effect.
(2) New Bearing Grinding and Grinding
As cubic boron nitride grinding wheel has good processing characteristics, new grinding wheel manufacturing technology, dressing technology, special bearing grinder and grinding oil are being upgraded to meet the progress of grinding technology.
(4) CNC technology for bearing grinding
NC technology can ensure positioning accuracy in high speed and low speed operation. It can accomplish fast jump, fast trend, dressing compensation, rough and fine grinding, which greatly simplifies the feeding mechanism of machine tools and greatly improves the performance reliability.

2. Scheme of New Bearing Grinding
(1) clamping method of bearings
Axial runout can be avoided when bearing grinding is positioned with large cylindrical and technological angle after correcting accuracy.
(2) Cutting allowance of bearings
Cutting allowance is an important parameter to ensure high efficiency and high precision bearing grinding. Usually, the finishing allowance is controlled at the micron level.
(3) Selection of Abrasive Tools for Bearings
Modern grinding technology adopts high-speed grinding to ensure that grinding debris will not stick to the grinding wheel during grinding process and maintain good self-sharpening.
(4) Grinding Speed of Bearings
The rotational speed of the workpiece is related to the diameter of the bearing grinding surface. The rotational speed of the workpiece has a great influence on the grinding scar and surface roughness. Low rotational speed will cause ripple on the grinding surface, increase the surface residual stress, and high rotational speed will cause grinding surface burns.

3. Grinding of New Bearings
(1) Bearing Accuracy
Bearing accuracy is mainly formed by machine tool accuracy, fixture accuracy and grinding process parameters. Therefore, the reasonable determination of grinding coordinates of CNC machine tools and the position of grinding wheel correction coordinates are also important parameters to promote workpiece quality.
(2) Bearing Burns
In the process of bearing grinding, the phenomenon of grinding burn will occur if the technological parameters are unreasonable or the dimensional accuracy of the blank is not well controlled. The main factors causing grinding burn include low linear speed of grinding wheel, low cutting force, large normal force on grinding wheel and workpiece surface, etc.
(3) Bearing Cracks
When the grinding parameters are unreasonable, cracks or micro-cracks will occur on the grinding surface of the mid-hole seat surface after grinding, especially in the pressure chamber of the seat surface, which will cause cavitation on the front edge of the seat and reduce the fatigue strength of the bearing.

4. Selection of New Grinding Oils
(1) Extreme Pressure Performance of Grinding Oil
The special grinding oil contains sulfur extreme pressure and anti-wear additives, which can effectively protect the abrasive tools and improve the process accuracy.
(2) Chemical Properties of Grinding Oil
The special grinding oil has good chemical stability and will not harm equipment, human body and environment.
(3) Other properties of grinding oil
The special grinding oil has passed strict tests in viscosity, flash point, pour point and thermal conductivity to meet various process requirements.
Two hundred and one billion one hundred and thirty-two million five hundred and ninety-four thousand one hundred and thirty

Above is the treatment plan after the problem of metal grinding process. High quality raw materials are the prerequisite for good grinding quality. In addition, grinding process accuracy is closely related to workpiece surface condition and heat treatment process.