2019 – Page 54 – CNC Machining & Turning, Milling, Metal parts

Common problems in the use of high frequency welder equipment

any people use high-frequency welding machine will have large and small fault problems, then frequently used problems in the use of high-frequency welding equipment.

One, high frequency welding machine induction heating device when the water shortage protection alarm, may be these reasons: 1. pipe connection, 2. water pump power or pressure flow is insufficient (can not use machine cooling pump), water quality is poor, 3. waterways have clogging phenomenon and so on. These problems are well solved. When the water pipe is reversed, it only needs to be reconnected. When the pump power or pressure and flow rate are insufficient, the water pump head can be changed; when the water is blocked, the air gun is used to blow through.
Two, high frequency welding machine overheating protection alarm, may be these reasons: cooling water is too small, water flow is not enough, water is too poor, waterways may be blocked, and so on.
Three. When the high frequency welding machine has overvoltage protection alarm, the possible reasons are that the voltage of the power grid exceeds the rated voltage over ten percent, and it is used in the low peak of electric power consumption.
Four. When high frequency welder has overcurrent protection alarm, the possible reasons are: the shape and size of the self-made induction coil, the small distance between the workpiece and the induction coil, the short circuit fire between the workpiece and the induction coil or the induction coil itself, the influence of the metal fixture of the customers or the adjacent gold when the induction coil is used. The influence of the belongings and so on.
Five, when there is a lack of phase protection alarm, the possible reasons are: three phase electricity is seriously unbalanced, three phase electricity has a lack of one phase, air switch or power supply line has a circuit breakage.
Six, the work is easy to jump (suddenly stop working), the induction coil speed is too fast, the workpiece and induction coil or induction coil itself has short circuit fire phenomenon, the gap between the workpiece and induction coil is too small, and the shape and size of self-made induction coil is not correct.

Requirements for installation of rubber tension test machine

he body and the dynamometer are carried on the basis of the concrete. The distance between the main body and the dynamometer is adjusted according to the shape and the foundation map, and the direction is adjusted. Then the thin block of iron can be inserted into the main body and the bottom of the dynamometer (and the base), and the square level instrument of the 0.05/1000 precision is used to find the correction respectively.

The preliminary finding of the subject

In the two different positions of the two vertical columns, the square horizontal meter can not be measured with a square horizontal meter, and the vertical and horizontal two position of the square horizontal instrument can be found on the outer surface of the oil cylinder, and the sag of lead can be found.

The accuracy of the rubber tension test machine

After the preliminary accuracy of the test machine is found, the initial running test is carried out after the oil pipe, the power supply and the oil are poured, and the accuracy of the test machine is then corrected when the test car is in good condition.

A square horizontal instrument is used to work on the working platform to find the plumb line of the positive oil cylinder, adjust or increase the cushion iron below the machine seat, so that the error should not exceed 0.10/1000.

When the precision of the test machine is found, the whole space under the frame is filled with cement slurry to keep the machine base well combined with the cement base to prevent the non – level of the test machine from vibration in the process of use.

After the anchor nut is poured, it is not allowed to tighten the nut and operate the testing machine before the cement is dry. (cement drying time is usually not less than 10-15 days) after the cement is completely dry, fasten the good luck foot nut, check the accuracy of the installation of the test machine, whether it is in line with the accuracy of the test. If the non conformity should be re searched.

In the use of tension test machine, because the vibration of the test is easy to produce loose phenomenon, so the tension test machine should be fastened after a period of time.

2. Take over

When installing the oil pipe connected with the dynamometer, wash the kerosene inside the tubing and ensure the cleanliness of the oil circuit. Attention should be paid to whether the gasket is complete, so as to prevent oil leakage at high pressure.

3. Selection of oil specifications

In hydraulic rotation, N68 precision machine tool hydraulic oil can be used, or other similar specifications of the oil can be used. Its kinematic viscosity is (100 degrees centigrade) 11-14 centigrade.

4, oil filling and oil discharge

Open the air filter on the tank and pour the oil into the fuel tank. The amount of oil injected is about 24 kilograms. The specifications of the oil used can be described in the specifications of the oil. When oil is placed, open the bottom of the dynamometer to the bottom of the dynamometer. The duration of the oil use depends on the climate in various places. For example, the oil will be changed when the oil begins to deteriorate or the pollution is unused.

5. Connect electricity

The electrical device of the rubber tension test machine is in the dynamometer, the power supply is three phase four wire system, the circuit between the main body and the dynamometer is connected with the plug. The dust and other impurities in the electric box should be cleaned before the electricity is connected. After the power supply line is introduced, the “power” button on the dynamometer panel is pressed to indicate that the light has been opened. Starting power supply, at this time can press the oil pump start button, observe the direction of motor rotation, press the lifting button of the jaw seat, check the lifting action of the lower jaw seat is consistent with the text shown on the button, at the same time check whether the limit is the function of the switch.

The above is about the requirements of the installation of rubber tensile testing machine. The KRW series microcomputer controlled rubber tensile testing machine manufactured by Chuan Bai, Ji’nan, is a new generation of dual space microcomputer controlled rubber testing machine. The test machine can be divided into the door type and the single arm type structure. The design of the host and accessories can draw on the advanced technology of foreign countries. It is beautiful in appearance, convenient in operation and stable and reliable in performance. Through the control system, the computer system controls the rotation of the servo motor through the speed control system. After decelerating the deceleration system, the moving cross beam is driven up and down through the precision screw pair, and the tensile, compression, bending and shearing tests of the sample are done without pollution, low noise, high efficiency and very wide adjustment. The speed range and the moving distance of the crossbeam are also equipped with a wide variety of experimental attachments. It has a very broad application prospect in the mechanical properties test of metal, nonmetal, composite and products. At the same time, test and data processing can be carried out according to GB, ISO, JIS, ASTM, DIN and users.

Rubber tension test machine is mainly used in polymer materials, such as rubber, plastic and woven materials such as tensile test, loaded on the reverse device, but also can be used as compression test, then the next arm, Ji’nan Chuan together to see the installation requirements of rubber tension test machine!

Practical value of automatic spray painting equipment

Now many large factories use automatic spray paint equipment. Automatic spray painting equipment has many advantages, such as precision spraying, long normal running time, cost saving, short work beat and effective integration of coating equipment.
1. Strong reliability – long running time
With mature design, maintenance workload is minimized, and normal working hours are long.
Two, good security – a safe investment
Advanced motion control function and collision detection function can significantly reduce the risk of damage to tools or workpieces.
Three, fast speed – short operation cycle time
Automatic spray painting equipment, with small body shape, large scope of work, good flexibility and versatility, and its quick operation speed, high precision, short beat time, widely used in spraying of small and medium parts in various industries, providing customers with economic, professional and high quality spraying solutions

The greatest sense of achievement is the trust of the customer

The company has been doing sales for two years, from the muddled and familiar to the product, from the customer to the intimate conversation, from the strange to the friend, the large and small list has done a lot, the monthly sales volume is also increasing month by month, but this is not my most achievement, let me feel the most accomplishment is, big guest. The formation of the household.
Customer A brother (name should not be revealed with A instead of) is a list I accidentally received on a certain day, when A brother gave me the feeling of verbose, because he bought a computer gong processing parts, but the question of consulting more than a number of large customers, but he asked not redundant, all aspects of the very careful, thought about, thought carefully, thought in consideration The road was very clear, so I was very patient to communicate with him. At that time, the processing part of the computer gong seemed to communicate for nearly two hours. Because our computer gong processing parts and the parameters are also there, general customers asked the parameter matching to buy, half an hour has already been completed. Then through this exchange, we have more trust in each other’s homes.
Three months later, A came again. This time he took two computer gong processing parts and last different models. Later, there were two or three intervals of two or three months, and 10 computer gong parts were processed, and the cooperation was smooth. Of course, there have been exchanges and gossip during the period. A blessing from the festival will return to chat, so that we become friends.
Then the end of last month, A brother once in my one-time processing computer gong parts 10000, three batches of shipments, A brother this consultation is very few, I think this is the source of trust, not only my trust, but also the trust of the company, and the product. The company also attaches great importance to this big customer to develop, give preferential treatment, at the same time, I also have a certain reward, and I, not only to reward, but also accumulated a certain sales experience, more important is the harvest of a friend, a trust, this is the most important thing I value.

Have you done the routine maintenance of the pulse grinding cabinet

1, in the operation of the equipment, special personnel should be provided for management and operation records.
2, managers should be familiar with the dust collector principle, performance and conditions of use, and master the adjustment of operating parameters and equipment maintenance methods.
3, reducer, ash conveying device and other mechanical moving parts should be refueling according to regulations. Abnormal phenomena should be eliminated in time.
4. The oil and water separator in the drain valve and gas source triplet should be discharged once every time. The oil mist detector should check the oil storage situation regularly, and timely refueling.
5. If the pulse valve fails, it should be eliminated in time. For example, internal magazines, moisture and other foreign matters should be cleaned in time. The damage of the diaphragm should be replaced in time.
6, regularly check the cylinder and flange surface conditions. If air leakage is found, replace the sealing ring in time.
7, repair door sealing strip, if there is aging, should be replaced promptly.
8, regularly determine the process parameters, such as smoke volume, temperature, concentration and so on, find abnormal, find the cause and deal with it in time.
9, regularly check the gas path system, dust removal system work, found abnormal and timely elimination
10. When starting the machine, the compressed air is connected to the gas storage tank first, the power supply is connected, the power supply is controlled and the ash discharging device is started. If there are other equipment in the system, it should be controlled in chain according to the process requirements.
11. When the process system is stopped, the deduster and exhaust fan should continue to work for a period of time to remove the moisture and dust in the equipment, and the dust removal operation must be repeated before the dust collector stops working.
12. When the machine is shut down, it is not necessary to cut off the high-pressure gas source immediately. Especially when the fan is working, the compressed air must be provided to the lifting valve to ensure that the lifting valve is working in normal condition.
13. When the dust collector works normally, the ash removal device can not stop working.

17 single gold laws summed up by foreign sales

werful help in your sales work.

– David Priemer; VP of sales

9. Multitasking is overrated as a skill.

The “multitasking” skills have been overestimated.

In fact, I believe that “multitasking” will only ruin a lot of things, and the key to success in the sales process is strict priority.

– Nick Hedges; CEO and President

10. Ask a’Thank you’lunch date.

Invite customers to have a “thank you” lunch together.

I usually invite them to have a “thank you” lunch or a cup of coffee after they have completed the transaction with the new customers.

Because I find that once a deal is done, it will become less pressure to get along with the customer, and it is also an opportunity to make a better relationship with the customer, which can lay the foundation for longer term cooperation.

– Jessica Medeiros; Account Executive

11. Listen more and talk less.

Listen more and talk less.

For customers with different backgrounds, listen more and speak less. Put forward your questions and know the key points that really affect the transaction.

– Tarun Pant; commercial-account Executive

12. Get them to laugh.

Make the customer laugh.

If you can make the customer laugh, then you are in good shape. It will be much easier to make the order.

– Elizabeth Ostby; Account Executive

13. Know what your customer does.

Know what your customer is doing.

Before any conversation starts, make sure you know exactly what your customers are doing and what their profit models are.

When you sit with a CEO but don’t know how their business works, then you are not far away from failure.

– Emily Markenson; Account Executive

14. Focused on adding customer’s value.

Focus on the value added to the customer.

As a salesperson, you should add value to customers before any problems happen.

For example, don’t try to wake up your potential customers with a monotonous “check – mail” or phone call. Is it better to send them a favorite business book?

– David Priemer; VP of sales

15. Tech doesn’t help you win deals.

High tech does not directly help you deal with it.

The technology that can make your business faster, smarter, more effective and more beneficial is the high technology you really need.

Matt Heinz; President

16. Quick question.

Ask yourself quickly.

How good are you going to tell stories?

Or ask another question. When did you last tell a client a great story? Being a storytelling is a secret to help you make more friends, win more benefits, and get more fun in your work and life.

A good personal story can usually break the barriers with customers and attract them, so that your sales presentation can reach a new height. So how do you be good at telling stories?

– Mark Raymo; SMB strategic-account Executive

17. Write better cold emails.

A solution to the large oil consumption of diesel generator set

lubricating oil of diesel generating set usually passes through the gap between piston ring and ring groove, and the gap between valve and conduit enters the combustion chamber. The direct reason for its entry is that the first piston ring is near the top stop because of its sharp decline in movement speed, so that the lubricating oil attached to it is thrown into the combustion chamber. Therefore, the gap between the piston ring and the piston, the amount of oil scraping and the oil scraping, the pressure in the chamber and the viscosity of the oil are closely related to the oil consumption.

1, check the oil leakage: if the oil drops oil from the edge of the flywheel or the back end of the oil bottom, it is the rear oil seal of the crankshaft; if the oil flows outward from the cylinder at the rear end of the camshaft, it indicates that the rear end cover of the camshaft is not sealed and oil is sealed; if the oil is flung out of the crankshaft, it is indicated that the gear cover washer is damaged or the device is not installed. When oil leaks and oil leaks in other village pads or tubing joints, it can be seen from the appearance that there are traces of oil leaking. Check the loosening of the connecting screws or tubing joints and whether the village pad is broken or not.

2, if the exhaust smokes blue, it indicates that the oil is discharged after the combustion of the suction cylinder. Should first check the oil in the inlet pipe, if the oil is used, the compressor impeller shaft seal ring of the exhaust turbocharger is invalid, the oil CIS shaft inflows into the intake port and the seal ring should be replaced. If the inlet pipe is dry and without oil, the valve seal cap should be checked to be intact, the intake door rod and the catheter clearance is the same. Not too big, and give replacement repair.

If the above conditions are all good, the cylinder head and oil bottom shell of the diesel generator set are removed, the cylinder, piston and piston ring are checked and measured in an all-round way, and the wear of the piston, piston ring and cylinder and the assembly clearance are too large and the installation of the piston ring is correct, so that the purpose of removing the fault is achieved.

What is the function of the chain plate hoist?

Chain plate hoist is a kind of conveying equipment with wide application scope. The following functions are as follows:
Undefined

1. The chain plate hoist (net chain hoist) has smooth and smooth conveyor surface, small friction and smooth transition between the conveyer lines, and can transport various kinds of glass bottles, PET bottles, cans and other materials, and can also transport various kinds of bags.
2, chain conveyor hoist (network chain hoist) large capacity, can carry a larger load, such as electric vehicles, motorcycles, generators and other industries;
3, chain plate hoist (mesh chain hoist) is clean and convenient, and can meet the hygienic requirements of food and beverage industry.
4, chain plate hoist (network chain hoist) layout is flexible.
5, chain plate hoist (net chain hoist) is simple in structure and easy to maintain.
Products in stock, let’s look at the pictures of PS, OK, give a suggestion, learn from each other and make progress!

The role of chain plate hoist

Chain plate hoist is a kind of conveying equipment with wide application scope. The following functions are as follows:
Undefined

1. The chain plate hoist (net chain hoist) has smooth and smooth conveyor surface, small friction and smooth transition between the conveyer lines, and can transport various kinds of glass bottles, PET bottles, cans and other materials, and can also transport various kinds of bags.
2, chain conveyor hoist (network chain hoist) large capacity, can carry a larger load, such as electric vehicles, motorcycles, generators and other industries;
3, chain plate hoist (mesh chain hoist) is clean and convenient, and can meet the hygienic requirements of food and beverage industry.
4, chain plate hoist (network chain hoist) layout is flexible.
5, chain plate hoist (net chain hoist) is simple in structure and easy to maintain.
Products in stock, let’s look at the pictures of PS, OK, give a suggestion, learn from each other and make progress!

How to solve defects such as shrinkage porosity and bubble segregation in 3D cast iron platform

In the process of casting, the three dimensional flexible welding platform of cast iron is unavoidable to meet the defects of shrinkage, bubble, segregation and so on, which causes the low yield of the castings, and the production of the re furnace is faced with a large amount of human and electrical energy consumption. How to reduce casting defects is a problem that foundry people have always been concerned about.
In order to reduce the defects of casting, our company has arranged ten major criteria for reducing casting defects, hoping to help the colleagues in foundry industry.
1. Good castings start from high quality melting
Once casting is started, the first step is to prepare, check and handle the melting process. If required, the acceptable minimum standard can be adopted. A better option, however, is to prepare and adopt near zero defect melting schemes.
2, avoid the turbulent inclusion on the free surface
This requires that the front free surface (meniscus) flow rate be too high. For most metals, the maximum flow rate is controlled at 0.5m/s. For closed gating systems or thin-walled components, the maximum flow rate will be increased appropriately. This requirement also means that the height of the metal liquid can not exceed the critical value of the “drop” height.
3, to avoid laminar inclusions on the surface of metal liquid

This requires that the front end of any metal stream should not stop flowing in the mold filling process. The metal meniscus at the early filling stage must remain in motion and free from the influence of thickening of the surface shell, which will become part of the casting. To achieve this effect, the front end of the liquid metal can be designed to expand continuously. In practice, only bottom injection “uphill” can achieve continuous rising process. (for example, gravity casting starts upward from the bottom of the runner).
4. Avoid gas (producing bubbles)
Avoid bubbles coming from the casting system and enter the cavity. It can be achieved by the following ways:
The rational design of the ladder gate cup;
The reasonable design of the straight runner is fast and full.
The rational use of “dams”;
Avoid “well type” or other open gating systems.
Use small cross section runner or use the ceramic filter near the runner at the runner.
Use the degassing device;
There is no interruption in the pouring process.
5, avoid the hole in the sand core
Avoid bubbles formed in sand core or sand mold into the cavity metal. The sand core must ensure very low gas content, or adopt appropriate exhaust to prevent the formation of the sand core. It can not be repaired with clay core or mold unless it is completely dry.
6, avoid shrinkage
Due to the influence of convection and unstable pressure gradient, the castings with large cross-section can not be fed upward. Therefore, it is necessary to follow all the feeding laws to ensure a good feeding design. The computer simulation technology is used to verify the actual samples. Control the flare level at the junction of sand mold and sand core; control the thickness of casting coating (if any); control the temperature of alloy and mold.
7. Avoid convection
The damage of convection is related to the time of solidification. Both thin-walled and thick walled castings are free from convective hazards. For medium thickness castings, the convection hazard is reduced by casting structure or process.
Avoid upward shrinkage;
Flipping after pouring
8, reduction of segregation
Prevention of segregation and control within the standard range or customer permitted component overrun area. If possible, try to avoid channel segregation
9. Reduction of residual stress
Do not use water (cold water or hot water) medium for quenching after light alloy solid solution treatment. If the casting stress does not seem to be large, polymer quencher or forced air quenching can be used.
10. A given datum point
All castings must be provided with positioning datum points for dimensional inspection and processing.