July 2019 – Page 65 – CNC Machining & Turning, Milling, Metal parts

The main reasons for permanent failure of hardware accessories in advance?

2018/5/24 19:48:26 Viewers:5

Generally speaking, the hardware parts we make will be designed and made according to the actual situation, but after a period of time, the mold will be wrong or permanently invalid. Today, the question is answered by the small editor.
Undefined 1) the material problem of the main working parts of the mould and improper material selection. The material has bad performance and no wear resistance; the die steel has not been refined, and has a large number of smelting defects; the convex and concave die, the forging process of the forging blank is not perfect, and the remains have the hidden trouble of heat treatment.
2) the problem of die structure design, and the structure of stamping die is unreasonable. The slender punch has no design reinforcement device, the discharge port is not smooth, there is a pile up, the unloading force is over, the ambassador mold is subjected to alternating load increasing and so on.
3) the molding process is not perfect, mainly manifested in the poor quality of the convex and concave die forging billets, and the heat treatment technology and technology have problems, resulting in the imperfection of the convex and concave die, the soft point and the uneven hardness. Sometimes there are micro cracks and even cracks. The grinding and polishing are not in place, and the surface roughness is too large.
4) no lubrication or lubrication, but the effect is not good.
Article label: hardware accessories D buckle dog buckle box

Working principle of sludge treatment equipment

The high humidity sludge is sent directly into the roller crushing dryer by the feed spiral, and the copy plate on the inner wall of the roller is repeatedly copied and dropped. After the crushing device is scattered, the material is in full contact with the high temperature medium under the negative pressure to complete the heat and mass transfer process. Because of the inclination of the roller and the effect of the introduction of the air, the material is slowly moved from the feed end, and it is discharged by the helix of the material after drying. The tail gas is discharged through the dust collector and discharged into the atmosphere.
The sludge treatment equipment adopts a flow drying process, especially for the rapid drying of the high wet sludge which needs to be preserved. For example, the treatment of fresh chicken manure can be used to dry, sterilize, deodorize and preserve nutrition at a time. The machine is equipped with a high-speed rotary crushing device, which increases the contact area of the sludge and the drying medium, and a certain inside of the equipment. Some unique designs make the sludge not easy to adhere to the operation board and cylinder wall. The whole machine has good thermal insulation and sealing performance, and its thermal efficiency is much higher than that of the ordinary roller dryer.
The sludge treatment equipment is compact in structure, easy to install and debug, and occupies small area. The roller and crushing device all adopt stepless speed regulation, which can meet the drying requirements of different materials. The machine can be used with the heat source of different fuel (such as coal, heavy oil and natural gas).

What are the safety precautions to operate punching machines?

In small and medium-sized enterprises, punching machine is one of the most used small machine tools. In the operation of punching machine, we must strictly follow the operation process, avoid irregular operation, not only affect the efficiency of machine tools, but also affect the normal operation of safety production. Today, Tai’an Shuo Yuan machine, a stainless steel punching machine, summarizes the safety matters of punching machine in operation.
First, the workers in the operation of the punching machine must not have the glove with a thread, because the punching machine is a high speed equipment, the wire of the glove is easily entangled into the equipment, causes harm to the human body, and other counties and ropes are not put in the operation area and the worktable. Secondly, in the process of operation, such as adjusting speed, stroke, clamping tool, workpiece and wiping equipment must be carried out in the state of parking. In loading and unloading bits, a special key must be used and the hand hammer can not be used to prevent the deformation of the central axis.
In order to improve the life of the punching machine, pay attention to the maintenance of the equipment, after the end of the work after the end of the power outage, use the rag cleaning, regular maintenance of the key parts, if there are abnormal, timely inspection of failure and timely maintenance, the operation of the equipment under the failure, the closure of the machine tool, clean the machine tool, clean the workplace, Before opening the equipment, check whether all parts of the drilling machine are normal.

What should be paid attention to the installation of the electromagnetic furnace

What do you need to pay attention to the installation of the electromagnetic furnace? Hot pot electromagnetic furnace table maintenance skills should be from the following aspects, the tempered glass has heat-resistant, wear-resistant, resistance, impact resistance, easy to clean up, crystal transparent and other characteristics, more and more people have been sent.
1., if there are decorative glass, you can use a toothbrush with a cleaner and an induction cooker to install. What should we pay attention to? Wipe off its stains. Because the seams are easy to crack, the shrinkage and deformation of the substrate will be caused. Prevent insolation, rain and rain.
2. hypothesis found that there are mildew, should be moved to the ventilation, and in the middle of the mildew in the center for 2-3 minutes, until the mildew fade away; to keep clean, must avoid pollution and produce mildew.
3. about tea and so on to the table, the electromagnetic oven installation need to pay attention to what? You can sprinkle some water on the table, wipe it with tin foil in the cigarette box, wash it with water and wash it off. It should be dry in time, otherwise, the time will leave a very ugly piece of film stains. Suppose there is a stain.
4. in daily cleaning, if the stain can be dipped in a towel with a towel or warm vinegar, wiped with a wet towel or newspaper, the surface of the glass is easily frosted in winter. It can be wiped with a cloth or white liquor. The effect is very good. In addition, it can also use the glass cleaning agent sold in the market, and avoid using the strong acid and alkali solution to clean.
5. in order to avoid scratching the glass surface, what should we pay attention to when installing the induction cooker? It’s better to lay the tablecloth on the platform. Always remember not to force the glass surface. When placing something on top, gently handle it.
6. if the coke marks only in the appearance, can be wrapped in a hard cloth on the toothpick to wipe the mark quietly, then coating a layer of wax, coke mark can be removed. In fact, the table chair is not necessary to take care of the table and chair, the electromagnetic furnace installation needs to pay attention to what? The greatest secret is to use it every day. The things you don’t use are always compared to the old and damaged. It only needs to be used frequently. The more it is used, the more it is consolidated, and the baby is valuable only when it is used. Prevent the burning of cigarettes, otherwise the scorch will be left.
7. first, the glass spray on the cleaning agent, and then paste the fresh-keeping film, so that the solidified oil stains softened, after a very long clock, tearing off the plastic film, and then wiped with wet cloth. What do you need to pay attention to the installation of the electromagnetic furnace? To stick to the bright bright glass, it is necessary to clean the glass regularly. If there is a handwriting on the glass, it can be rubbed with rubber soaking and then wiped with wet cloth; if there is a paint on the glass, the cotton can be dipped in hot vinegar, and the glass is wiped with clean dry cloth, and it can be as bright as crystal. The use of fresh-keeping film and wet cloth sprayed with detergent can also restore the oily glass.

Single arm hydraulic machine should pay attention to inspection and maintenance for a long time.

Single arm hydraulic press is mainly applied to the technology of drawing, forming and pressing of metal products, processing non metal materials, pressing of powder metallurgy products, correction of shaft parts, pressing of sleeve parts and shaping and cutting edge of metal products. The use of a long time will inevitably appear such or such a fault, so in daily use, we should pay attention to the single arm hydraulic press inspection and maintenance.

Single arm hydraulic press can avoid air entering the hydraulic system in the hydraulic system. Once the air inadvertently enters the hydraulic system of the hydraulic press, it will cause the excessive noise or the oxidative deterioration of the contact between the hydraulic oil and the air, in addition to taking some air into the hydraulic system in daily work. In addition to the measures, check whether there is air in the hydraulic system, if any, it should be eliminated in time.

The hydraulic oil in the hydraulic system of a single arm hydraulic press must be kept crystal clear. Do not cause any impurities in the hydraulic oil. Because these impurities can easily plug gaps or throttle holes, the hydraulic system can not work normally, and can also speed up the parts in the wear hydraulic system. Therefore, in addition to the installation of the devices that obstruct the external impurities into the hydraulic system, the hydraulic oil in the hydraulic system should be replaced or filtered regularly.

In the long term use of a single arm hydraulic press to avoid leakage of the hydraulic press, but here it is worth saying that, if the internal leakage, although the leakage of this situation is unavoidable, but there is a certain amount of internal leakage, if the leakage of excess, then the pressure in the hydraulic system will lead to pressure. Not enough, causing internal movement instability. Leakage should be avoided. Proper sealing devices should be installed on the single arm hydraulic press, and the device should be inspected regularly.

It’s the best time to start now

Last Sunday, I met an acquaintance when I was shopping. 10 years ago, she opened the typewriter copying shop just next door to my shop.
I looked at her up and down. The more than 40 year old woman looked very intelligent. She told me that she was working in a famous company in the city, and became a department director not long ago.
10 years ago, she was going to run a copy shop outside. She went home to do housework and tutor the son of primary school. But every day, she took up books, read a few pages and made several questions. I was surprised that she was preparing for the adult college entrance examination. She was already more than 30 years old. Is it too late? When you get a certificate of completion, it’s the age of 40. Besides, her small business is good. Her husband has a steady income. Is it necessary to spell it?
She said that the age of adult college entrance examination is a bit too big now. In fact, she wanted to register two years ago when she hesitated because of her age. In the past two years, now I wonder if I had made up my mind to achieve the goal two years ahead of time.
So, she decided to start from now. She didn’t want to wait two years and go back again.
Later, she passed the adult college entrance examination. With the opening of more and more copies, the business in her shop gradually became desolate. At the same time, middle-aged women play mahjong watching TV and go shopping. She is trying to improve her ability. At the age of ease, she had no choice.
Later, she closed the shop and started a new life. When she met her again, she was head of the Department of a large enterprise. Now, think back to it. It’s not too late to get a certificate of graduation at the age of more than 30 when you take part in the adult college entrance examination at the age of 40.
Two
I know a friend who was hooked on dancing at the age of 37. She wants to go to the dance class, all around the voice of opposition, everyone is asking her: the best age to learn the dance you have missed, your ligament still pull open? Is the action done well? In the face of questioning, she wanted to give up.
One time, she met a 58 year old sister in the dance classroom. She had been learning and dancing for 3 years. The dance skills were better than the teenage girls. She opened her mouth in surprise.
The elder sister told her that when she first learned the dance, she was also opposed by the family, and even some people said she was not afraid of disgrace. Old arms and old legs had also learned the fashion of young people. But she felt that now that she wants to learn, that is the best arrangement. It only takes more time than others to sweat more. How can I be reconciled to what I want to do without trying?
My friend decided to sign up to learn dancing that day. A few years later, she led the dance performance team in the provincial contest won the two prize.
It’s never too late to have anything. From now on, it’s the best time.
Three
I started writing when I was nearly 40 years old. At the time, I lamented that I started too late and regretted the wasted time.
I learned about Jiang Shumei on the Internet. She started learning to write at the age of 60, and began writing at the age of 75. Now four works have been published. Like many traditional women, she gave birth to her child’s whole life. She didn’t begin to do what she liked until the child’s adult and her wife passed away. Who can think of an old man who begins to read at the age of 60 and will become a writer in the future?
Mose, the famous grandmother, began painting at the age of 76, and at the age of 80 he held a personal exhibition. He created over 1600 works and warmed many people. She told people: don’t make excuses for yourself. It’s never too late to do what you want to do, even if you are 80 years old.
Grandma Mose once wrote such a saying: someone always said it was late. In fact, it’s the best time now. For a real pursuer, every period of life is young and timely.
Four
It’s never our age, but our attitude towards age. We always thought it was too late, but it was in this lament that we missed the opportunity again.
But later we found it was not too late when we thought it was late. If from now on, the present oneself has already obtained, therefore, regretted once again regretted.
There is a good saying: age is never the limit unless you bring it to yourself.
For the time that has been wasted, regrets have no meaning, it is better to start from now on, ten or twenty years later, you will be grateful to yourself now that you still choose to start at the best of age, otherwise life is really only a pity.

Application range and working principle of brake motor

With the development of the times and the progress of science and technology, the brake motors have high precision positioning requirements. As the brake motor should have: fast brake, accurate positioning, safe and reliable, the brake system can be used interchangeably, the structure is simple, easy to replace maintenance and so on. Many factories need brake motors to control the inertia of motors, so as to achieve accurate positioning of the requirements, so as to realize the automatic operation of machinery.
Such as: lifting machinery, ceramic printing machinery, painting machinery, leather machinery and so on. Brake motors are widely used and can be seen in all fields of machinery and equipment.
In the rear of the motor, there is an electromagnetic brake. When the motor is electrified, it is also connected by electricity. At this time it does not brake the motor. When the motor is broken, it is also cut off and brake the motor under the action of the spring.
The two lines are the two AC input terminal of a full bridge rectifier and connected to the motor at the end of any two line of the motor to synchronize with the motor for the exchange of 380 volts, and the two DC output receives the brake excitation coil. The principle of the work is that when the motor is electrified, the coil has to produce a suction force to separate the two friction surfaces of the tail, and the motor is rotated freely, and conversely, the motor can be brake by the spring recovery force. According to the different motor power, the coil resistance is between tens and hundreds of euro.
Power supply: three phase, 380V50Hz
Mode of work: S1 continuous working system
Protection grade: IP55
Cooling mode: IC0141
Insulation grade: F grade
Connection: 3KW below “Y” connection, 4KW above (including 4KW) “delta” connection.
Working conditions:
Ambient temperature: -20 C -40 C
Altitude: below 1000M
Braking mode: loss of power braking, brake power supply from the rectifier in the junction box, H100 AC220V-DC99V, H112 or more AC380-DC170V.
Applicable to: various machine tools, printing machinery, forging machine, transportation machinery, packaging machinery, food machinery, construction machinery, woodworking machinery and other requirements for rapid stop, accurate positioning, reciprocating operation, to prevent sliding of all kinds of machinery as spindle drive and auxiliary transmission.
SElE Gao Tong is a manufacturer of professional R & D, production and sales of industrial motors, fans and reducer. The products are certified by CCC, CE, CSA, UL, PSE and other countries. The company has production bases in Shanghai, Zhejiang and Guangdong, and has offices in major foreign countries and regions. Since the establishment of the company, the company has been adhering to the corporate culture of ‘customer based’ & ‘striving for pride’. It is committed to providing a dedicated service and professional solutions for each customer to create value for the customers! SEIE high and continuously improve the efficiency of motor, fan and reducer, and take the lead in producing international IE4 standard high efficiency motor, providing green energy for product chain and market. Standard, fine one, innovation and efficiency are the business philosophy of the company. The company has achieved high quality and low cost operation ability through standard production process, improving quality control and control, technology innovation and efficient management operation.
SElE has been rooted in the field of mechanical and electrical integration for a long time. It has provided a whole solution in the fields of machine tool processing, printing and packaging, metallurgical coal mine, electronic equipment, food machinery, intelligent building, industrial automation and so on, and has established a large number of strategic partners. The company’s development concept has also been widely recognized and resonated in the industry.
SElE Gao Tong hopes to join hands with you to create industrial value.
Enterprise vision: provide green power for customers continuously.
Create value environment for employees!
Corporate culture: customer oriented and striving for glory!
Business philosophy: standards, refinement, innovation and efficiency.
Management concept: teamwork, honor and disgrace!
Quality concept: make the product convincing!

Main parts of electric welding machine

The main component of the electric welding machine is a step-down transformer. The two ends of the secondary coil are welded and welding rods. The arc is ignited when working, and the electrode is fused to the slot in the high temperature of the arc. Because the iron core of the welding transformer has its own characteristics, it has the characteristic of sharp drop of voltage, that is, the voltage drops after the electrode is ignited, and the voltage drops sharply when the electrode is short circuited by adhesion. In the welding operation, although the current in the circuit is equal everywhere, but because of the different resistance, the maximum resistance at the unfixed contact is the contact resistance, according to the law of the thermal effect of the current (also called the jar’s law), that is, Q=IR.t can know that the higher the resistance is, the higher the heat is in the current phase. So when welding, the contact of the electrode is the most contact resistance at the contact of the metal body, and the electric heating is the most natural in this area, and the welding rod is the alloy with low melting point, and it is easy to melt. After melting, the alloy welding rod is bonded to the welded object, and then the welding object is bonded to one piece after cooling.

The difference between the full heat exchanger and the sensible heat exchanger

At present, there are two new fans with heat exchange functions on the market, one is the full heat exchanger and the other is a heat exchanger. The former is usually “paper” in the former, and the latter is usually aluminum. So there is no aluminum heat exchanger in the world. The general name of the aluminum core is the heat exchanger.

So what are the advantages and disadvantages of the two?
First, we look at the essence of them.

The total heat exchanger is commonly referred to as ERV, the full name is Energy Recovery Ventilation, and is translated into energy recovery ventilation.
The sensible heat exchanger is commonly referred to as HRV, the full name is Heat Recovery Ventilation, and the translation is heat recovery ventilation equipment.
The energy in the air includes the sensible heat (temperature) and the latent heat (humidity), and it is obvious that the total heat exchanger can reclaim the energy as a whole, and that the heat exchanger can only be part of the temperature, which is the essential difference between them.
Therefore, from the energy saving effect, the heat exchanger is not as good as the full heat exchanger, in other words, the popular point, the energy saving effect of the aluminium core new fan is not as good as the paper core new fan.

(2) from the actual installation and Application

There is a concept of “dew point” in the air, that is to say that the surface of the object will be exposed in a certain temperature and humidity state, which is reflected in the new fan. The surface of the so-called object is the surface of the heat exchange core, and the temperature of the heat exchange core will change because the new wind machine is to exchange the indoor and outdoor air. The greater the temperature difference, the higher the risk of condensation. And because the sensible heat exchanger can not adjust the humidity, the risk of condensation is much higher than that of the total heat exchanger. All sensible heat exchangers will be equipped with “draft tube”, because in general, the rate of condensation and frost will probably occur.

The function of the draft tube is to guide the condensation water formed after condensation and frosting.
In the north, it is not advisable to get the diversion pipe outside, which is not advisable, because the north winter outdoor is lower than zero degree is normal, the diversion pipe will inevitably freeze, the pipe freeze can not guide the flow.

3. The total heat exchanger has the function of regulating indoor air humidity.

We take the hot summer humidity in southern China as an example: high outdoor temperature, high humidity (38 degree, relative humidity 90%), low indoor temperature, high humidity (using air conditioning, 26 degrees, relative humidity 90%).

Can we reduce indoor air humidity through the fresh air system?

Sensible heat exchangers must not be able to, because aluminum as an exchange medium is not permeable and can not exchange humidity.

So can the whole heat exchanger be able to do it?
Knowledge point 1: the humidity we usually say is relative humidity. In the case of the same relative humidity, the content of water in the air with high temperature is greater than that of the low temperature air.

Knowledge point 2: water in the air is transmitted through pressure. The pressure is large and the pressure is small.

If there are 3 drops of water in the outdoor air of 38 degrees outside, and 2 drops of water in the indoor air of 26 degrees in the room, then when the two strands of air meet in the full heat exchange core, the water molecules, which have more pressure, will transmit the water molecules to the indoor exhaust side, thus the water molecules in the new air entering the room are less and the humidity is reduced. Coming。

What is the difference between an intelligent polishing machine and a traditional polishing machine?

The traditional polishing machine usually needs to make a polishing workshop separately, because the polishing is the grinding of the rough surface of the metal surface. According to the requirements of the smooth surface of the workpiece, the polishing wheel with different hardness is replaced, and coarse grinding, medium grinding and fine grinding are carried out. The end of the desired purpose.
Undefined

Our newly developed automatic polishing machine and grinding machine are more durable, more efficient and convenient, and can only be achieved by combining robots and manipulators.
Human production.
Undefined
Looking at the above comparison, are you still polishing by hand? A good polishing machine is equal to a few polisher. We are still polishing the headache customers. Please pick up the phone.