July 2019 – Page 40 – CNC Machining & Turning, Milling, Metal parts

Maintenance of filter core of vacuum oil filter

The filter core of the vacuum oil filter is a product which is used to keep the hydraulic oil clean in the oil filter. The filter core of the filter is how to ensure the cleanliness of the oil for a long time. The key is to use it correctly. First, we should choose the filter core of the vacuum oil filter, because the model between the filter core and the equipment of the vacuum filter is matched, if the selection is not available. When it affects the filtering effect.

The filter core of the vacuum oil filter needs to be cleaned and replaced in time because in the time of purifying the oil, the impurities in the oil are all gathered on the top of the filter core. The oil filter speed will slow down for a long time and the oil quality is not clean enough.
The axial pressure can not be increased during use. If so, the oil can pass through the filter quickly, but it will often crush the filter element and affect the cleanliness of the hydraulic oil.

In order to ensure the cleanliness of the filter element of the vacuum oil filter, we must clean the filter element of the vacuum filter in time.
1, before cleaning the vacuum filter, we must stop the operation of the oil filter, close the oil inlet and outlet pipeline, and turn off the power switch.
2. Open the drain valve and drain all the oil in the filter until the oil flow is finished. When the oil is released, the bleed valve can be opened to speed up the oil release.
3. Open the filter cover and remove the filter cartridge after you have finished.
4. Filter cartridge of vacuum oil filter. Remove the filter cartridge and put it into the oil pan containing oil. Soak for 30 minutes and then clean it with gas.
5. Remove the sediment on the surface of the filter with a brush and wipe the filter with a cloth.
6, then install the filter core, lock the filter bolt. Finish cleaning can be put into use. How to maintain the vacuum oil filter to reduce the failure of the vacuum oil filter is used to filter out the impurities, water and other substances in the oil, so as to purify the quality of the crude oil. The working principle of the vacuum oil filter is to separate the residue from the oil through the centrifugal force of the rotating drum so as to achieve liquid solid separation.

So how can the vacuum oil filter be changed when it is stopped?
1: the condenser of vacuum oil filter and heater should be cleaned regularly, otherwise it will affect efficiency and shorten life.
2: when the vacuum filter is not used, the waste oil in the vacuum pump should be exhausted and injected with new oil.
3: after the outdoor low temperature environment is finished, the storage water from the vacuum pump to the condenser must be cleaned to prevent freezing and damage to the equipment.
4: when the operating vacuum oil filter needs to be interrupted, the operation of the oil pump should be stopped after the heating power 5min is disconnected in order to prevent the hydrocarbon gas from heating up in the middle part of the oil road.

Maybe a list can change the fate of a company

Perhaps a list can change the fate of a company, and do not despise anyone or anything.
I am made of powder metallurgy products.
On December 10, 2017, Sunday morning, 10, I received a phone call from the north. Are you a manufacturer of powder metallurgy products? I have two products with a lot of demand here. A king of our company is looking at the market in Zhejiang. It is required to choose a regular manufacturer with strong strength, technical strength and management. Can you come to your company in the afternoon to see it?
Yes, of course, I said. But in my mind, we have a rest in the factory today. If the customers come, I can’t see the hot work scene, and I myself and my wife and children just play outside. If I come in the afternoon, I have to finish the journey.
But the customer is God, can not let go of every opportunity to share business and products with customers, the customer’s request is military intelligence, must meet their needs. Next, I said to my client, “good afternoon, I will wait for Wang Zong in the company.”
We also ended our little journey early and went back to the factory to wait for Wang Zong to come.
But when more than 5 of the customers did not come, the letter to Wang asked the general situation, Wang said that because of the time in Wenzhou can not be arranged, tomorrow morning to my company.
At 9:30 in the morning of No. 11, Wang did come to our company to investigate and negotiate. We talked very happily. Wang’s general professional and personality charms are quite strong, but there are many problems to be solved. From the customer’s needs, we have accumulated many years of technical experience and contacts. It is ignorant.
In the end, we won this small list, if done well enough to change the fate of our company.

Different structure of sunshade of car side window

Speaking of car side window curtains, everyone thought of that is the kind of draping curtain that is left and right, overturning the traditional concept of sun shading, research and development of a lot of sunshade curtain products. Environmental protection and durability at the same time, get rid of the pleated curtain to give people a heavy feeling, refreshing and beautiful, is a good choice for the majority of owners.

In the near future, there are more and more customers with window curtains for sun shading consulting cars, and the installation environment and models are also various. In order to make you more clear to see the contrast of different styles of sun shades, this period is for us to show the side window shade products of bus and business cars.

Model: JL-32CK
Frame structure, the same type of motor car structure, with the sliding groove pull down can stop at any position, expansion and comfort, and bring different beauty and comfort for the converted bus.

Model: JL-FCK
Frame structure, matching Suzhou Jinlong good passenger car side window curtains, print logo, pull down to a certain position can lock position, lock position fixed drop that is loose automatically lock.

Model: JL-20CK
Frame structure, Xiamen Golden Dragon production luxury bus side window push and pull curtain, use light sunscreen fabric, can be good for passengers sunscreen sunscreen, at the same time to improve the comfort and luxury beauty.

Model: JL-S
Manual series, no guide, a variety of fabrics. The sun shading curtain is easy to install. It can be easily locked when pulling down in the drop-down process. When the lock position is fixed, the dropdown can be automatically retractable. At the same time, it can also choose to pull down the hook to hook the lock position.
You can choose the suitable fabric according to the interior color of your car and your hobbies.

Dry cut king gives you different cutting experiences

Dry cut small sawblade of our dry cut king gives you different cutting experience, extraordinary temperament, dry cutting strength, the value added formula, in the cutting process, sharpness stronger, more handy.
Undefined
Dry cutting requirements for small diamond saw blades:
The structure of the 1. saw blade should be fast. In the dry cutting process, in order to ensure the quality of the workpiece and the life of the tool, the cutting tool can be quickly discharged, so that the heat of the incoming workpiece and the tool is greatly reduced.
The friction coefficient between the 2. chips and the cutting tools should be as small as possible. In dry cutting, the high temperature produced in the cutting area produces chemical instability, the friction between the cutting tool and the chip increases and the chip cutting speed slows down, and it is very easy to produce the chip tumor and aggravate the tool wear. Therefore, the friction coefficient between chip and cutter should be reduced.
3. to have excellent high temperature resistance performance: although in dry cutting, the heat produced in the cutting area can not be completely discharged with the chip, but as long as the cutting tool geometry and cutting parameters are selected reasonably, most of the cutting heat can be discharged with the chip, and good processing effect can be obtained.
Dry cut small saw blade without cutting fluid, save cost, protect the environment, give you different cutting experience, is the current more hot saw blade, but also a big progress in the saw blade technology.

The difference between the marble flat and the cast iron

The quality of the quality marble flat gauge is made of “Ji’nan green” Dali stone material, and it is made of marble material based on several hundred years or thousands of geological changes. According to its special material, the marble measuring tool is not deformed, and it will not rust without permanent use. The accuracy is divided into 0,00000. The 000 level high precision marble plane can also be drilled and slotted, and can be customized according to the needs of customers.
Cast iron flat material is generally made of high strength iron, its working face is used to make its flatness to meet the required precision. The advantage of cast iron is that it is used for a long time with no problem for several hundred years, as long as it maintains its plane precision every year. Cast iron is made of high strength cast iron, and it does not damage easily.
Features
1, physical characteristics: specific gravity: 2970 to 3070kg/ compressive strength: 245 ~ 254N/m strong sexual grinding capacity: 1.27 ~ 1.47N/ m linear expansion coefficient: 4.6 x 10~6 degrees of water absorption: 0.13% Shaw strength: HS70 above.
2, marble has long natural aging, its structure is precise, its texture is even, its expansion factor is very small, the internal stress will not exist at all, and it will not deform.
3, rigidity is good, hardness is high, wear coefficient is very strong, so precision maintenance is very good.
4, temperature is not affected, flatness is maintained very well, and there is no need to worry about deformation and accuracy changes due to temperature changes.
5, marble flat feet will not scratch, will not happen to magnetic hair, the detection can smoothly move back and forth, will not occur stagnation and mobility is not flexible.
6, not afraid of acid, caustic fluid erosion, will not rust, maintenance and maintenance is also very simple, long service life.
7. Each marble ruler has a weight reducing hole, so that it can be conveniently taken during the use.
After the above summary, the marble level can not be struck and ground in the plane. Knocking will break the plane. Marble is made of stone. If it is grinded, the cast iron has no way to grind it. Cast iron is to be carefully maintained without coating with rust preventive oil so as not to rust and not be used. The accuracy of cast iron is 1, 2,3.
In the production of cast iron flat ruler, in order to stabilize the size of castings, castings are usually placed at room temperature for a long time before cutting. This measure is also known as artificial aging. But this time limitation does not belong to the process of metal heat treatment.
Cast iron is used as a casting product. According to the principle of casting, the cast iron must have internal stress after completion of cast iron. So it should be placed at a higher temperature or kept at room temperature so that its properties, shapes and sizes vary with time. The aging treatment, called artificial aging treatment, is called natural aging treatment if the workpiece is placed at room temperature or in a long time under natural conditions if the workpiece is heated to a higher temperature and the aging treatment process for a longer time is called artificial aging treatment. The purpose of aging treatment is to eliminate internal stress, stabilize structure and size, and improve mechanical properties.
The use of marble ruler is mainly used for fixing workpieces, which is the basic work for fitter workers to debug equipment, assemble equipment and repair equipment. It is suitable for precision production, precision measurement and precise marking work in mechanical processing and parts manufacturing industry.

Principle and characteristics of rebar upsetting machine

By using the principle of hydraulic cold heading, the plastic deformation of the steel tip is increased, the diameter increases by 4~6mm, and then the thread is processed. The actual cross-sectional area after thread processing is greater than that of the original reinforcement section, which greatly improves the tensile strength of the joint. This upsetting thread joint is completely broken by the tensile test and is suitable for the higher requirements.
The steel upsetting machine adopts hydraulic technology, upsetting reinforcing bar, used for straight thread connection technology, and sleeve connection joint. The device is suitable for the upsetting straight thread reinforcement joints made of hot rolled ribbed steel bars with diameters of 16 ~ 40mmHRB335 (grade II steel) and HRB400 (grade III steel).
Equipment features:
(1) simple operation, hydraulic and electrical control, no professional technicians, and training for ten minutes.
(2) enlarge the sectional area of the steel bar by 15-20%, so that the base diameter of the thread is not less than that of the steel.
The diameter of the reinforced material is fully exerting the tensile strength.
(3) the production efficiency is high, each class can upend 300-500 heads.
(4) processing steel bar is wide, and can be machined in accordance with GB1499 or BS4449 (CS2) standard 12- 12- 40 specifications of reinforcement.
(5) equipment failure rate is small, no spare parts are easily damaged, and construction cost is at the bottom.
(6) environmental protection and safety, not affected by environment and climate.

Use and function of three dimensional flexible welding platform

Use and function of three dimensional flexible welding platform
According to the different functions of each component, the three dimensional flexible welding platform fixture is divided into 8 categories: working platform, supporting part, positioning piece, adjusting key, pressing piece, locking piece, part and accessories. The following classification is used to introduce the function and use method of each positioning element in the tooling.
The work platform adopts the form of orifice plate. On the top surface and 4 sides of the high precision table, each 100mm has a round hole of 28mm, and a dimension line is divided at the same interval. The edge of the mesa can be with a millimeter scale line. The circular hole on the table can be used to splice various functions of the positioning module and fixture.
The dimensions of the 3D welding platform are from 1000mm * 1000mm to 2000mm * 4000mm, and can be combined into any size worktable as required. Each platform is designed with holes for mounting legs. The number of holes depends on the size and bearing capacity of the platform.
The support feet of the 3D welding platform include standard support feet, universal wheel support feet, fixed support feet, frame structure support and hydraulic lifting support to meet the different needs of customers. This series of elaborate designs provides great convenience to users. T groove plate (T groove platform),
According to customer requirements, the millimeter scale can be described on the two right angles of the platform.
1. general 2D, 3D tooling platform (16, 28 holes):
1. Flatness of tooling platform: less than 0.15mm/1000mm, perpendicularity of plane and side of 3D platform: less than 0.1mm/1000mm
2, the material of the tooling platform: steel parts (low alloy steel Q345), the whole ladder type heat treatment, to eliminate internal stress.
3. The tolerance of the hole distance is within 0.05mm
4. The hole length of the 16 series is 50mm, and the diameter of the series 100mm is 28
2. main auxiliary parts of fixture and fixture:
1, U square box, L square box:
Material: Q345, flatness is less than 0.1mm/1000mm, perpendicularity is less than 0.1/200mm, parallelism is less than 0.10/200mm
2, supporting the corner iron:
Material: Q345 or HT300, flatness is less than 0.1mm/m2, perpendicularity is less than 0.15/200mm, parallelism is less than 0.10/200mm
3, positioning parts: Material: Q345, flatness is less than 0.2mm/m2, perpendicularity is less than 0.15/200mm, parallelism is less than 0.20/200mm
4, angle: Material: Q345, according to the scale accurately positioning 0 to 225 degrees of arbitrary angle, angle adjustment to 0.5 degrees.
5, locking parts: Material: Q345, locking force is more than 1.2T, quenching and tempering treatment HRC32 ~ 35 degrees; steel ball quenching treatment HRC58 ~ 62 degrees.
6, compress: Material: Q345, tempering treatment

Application and processing of hot-melt copper nut

Copper nuts are classified according to the conditions of their embedded nuts, one of which is called hot melt copper nut. As the name suggests, the forming method of hot melt copper nut is the forming of copper nut in the hot melt machine. The material of hot melt copper nut is usually made of C3604 lead-free brass and C3604 quick cut brass as base material.
The way of embedding hot melt copper nut is usually by adding high temperature and hot pressing into the pre-set holes of plastic, and then forming threads through cooling. The hot-melt machine heated the copper to about 90 degrees Celsius, which raised the temperature inside the copper nut and pressed the copper nut into the plastic part. Finally, with the handle pressed, the plastic piece is melted into a copper nut, and a hot melt copper nut is formed.
The volume of hot melt copper nut is generally not large. It is usually used in the field of electronic products.

The working principle of the inlet valve assembly of air compressor

For the screw air compressor, the general rule of intake valve is that the intake valve is electrified and the power failure is unloaded. Sometimes our device has a slightly larger current when it is unloaded, and 22KW has 31A when it is unloaded. It is initially suspected that the intake valve is not strict, because when the gas is not used, the pressure will rise slowly after the machine is unloaded, and sometimes the high pressure alarm stops! And after the shutdown, there are still some residual pressure inside the machine that can not be discharged (around 6 kg), leading to the overloading of the main engine when the machine is started again.
When the screw air compressor inlet valve belongs to the normally open intake valve, the solenoid valve is opened when the screw air compressor is not loaded, and the solenoid valve is closed after the compressor is loaded. When the solenoid valve opens, there will be a gas to close the intake valve, but it can not be completely shut down, and the intake space is kept to maintain the minimum pressure required for the lubrication of the compressor. This pressure is generally 1. 5bar; after the solenoid valve is closed, the compression will enter the normal working state until the working pressure is set, depending on the user. The intake valve has two pipes and emptying one way, and the remaining gas in the valve is released to ensure normal loading of the compressor. When discharging, the current is too large, which indicates that the tank pressure is higher and the inlet valve opening is large. Please adjust the empty screw to ensure that the tank pressure will not be too high.
After the screw air compressor is stopped, the tank pressure can be completely emptied in about 60 seconds, that is, the pressure is 0. And your tank pressure is 6bar, indicating that there is a problem with the vent valve vent pipe: 1. The diameter of the pipe may be too fine; 2. The hole of the combination valve is too small or whether it is clogged or not.
After unloading, the pressure will rise slightly back and forth, but this is only a balance need, and the time is very short. It will not go up to high pressure stop. The high voltage shutdown should be the problem of the solenoid valve of the air compressor. Please check whether it is in good condition and whether it can work normally. No matter what intake valve, the tank pressure should be maintained at 1 during unloading. 0~2. Between 0BAR. Too high for screw air compressor energy is a great waste.

The previous life of hardware tools

You may be the person who sells hardware tools. You may be a hardware tool. You may be a hardware maker, but do you know the previous life of hardware tools?

Tools have a great effect on the progress of human beings. It can be said that tools bring the awakening of human beings. The evolution of human evolution from physiology to tool evolution is the result of natural selection, and it is an inevitable historical process. Human first step into the stone age, at this time the hardware tools are very rough, but already have the embryonic form of hardware tools, everywhere visible stone and animal bones to be the material of hardware tools, at that time the stone hammer, stone blade bone handle knife and so on.

When human beings enter the bronze and iron age, the Bronze Hardware tools have not been greatly developed because of the properties of bronze. The iron tools developed rapidly with their own advantages. In the next few centuries, iron as a raw material for hardware tools has played a great role in the progress of tools, iron hammers, iron wrenches and so on. The development of hardware tools has also opened a new chapter. Now, the materials of hardware tools are becoming more and more diverse, the styles and types of hardware tools are becoming more and more rich, and hardware tools are also divided into manual tools, electric tools and pneumatic tools. More and more materials and carbon materials are used in materials. Hardware tools are also designed to be multi-functional, and the type and style are no longer single.

Every development of tools has increased the power of human progress, and the importance of tools is self-evident. At present, the tool industry is carrying the important task of tool development. Everyone in the tool industry instills blood in its own way for the development of tools. In fact, every person who works conscientiously in the tool industry contributes to the progress of human civilization. We can not know the development of hardware tools in the future, but there will be more breakthroughs.