Machinery industry – Page 84 – CNC Machining & Turning, Milling, Metal parts

Bayer nanoscale spray coating technology manufacturer

Bayer nano coating technology has the advantages of environmental protection, small investment, no restriction on shape, material and color. At present, the technology of nanoscale coating is very mature in China. The reaction speed of silver mirror and the brightness of silver layer are no worse than that in the United States, and the price is much cheaper than that of the imported ones, and the advantages are obvious. We believe that as long as we put more energy into the research of Nano Spray Technology, nano spraying technology in our country can enter the international market.

How to do a little bit of thought for hardware accessories business

The first stage: just when making the nut screw industry business, it is far from the previous industry. The first day to come, there is a guest come to consult the product, what nut, what specifications, what material to be sent to me, I look at the only understanding of the material, others do not know what is the meaning, do not know how to answer the guests? He can only ask his colleagues with a thick face and ask questions. He has been busy for a long time, not only has his order not come down, but he has been teased by the guests. I think it might be the first time to enter a new industry. It’s all about me. For the next few days, I didn’t sit there, 1), but looking at the content of our website. 2), while looking at the information of our company, when guests come to ask, they get everything from the above two channels. 3) the most important resource, of course, should not be wasted. It is our colleagues. Ask more, listen more. 4) in the age of information, resources on the Internet are also a channel for us to grow up. Many very good websites are all we can learn, such as Taobao, hardware net, etc., Baidu has one search.
The second stage: familiarity with product knowledge is a magic weapon
1, the first step is to first understand the material composition of the product, then what is the difference and what different materials adapt to different working environments.
The 2 and second step is to understand the product structure of the company, what products are our superior products, and what are they not?
For example, our company’s products, the main products, mainly material, 304316, the dominant products are: stainless steel pulling rivet nut, butterfly nut, butterfly screw, metal locking nut, flange nylon locking nut, flange metal locking nut, card type, K cap, nylon cover mother, welded nut, quadrisquare nut, long nut, burglproof Nut, anti-theft screw, internal expansion, knurled pin.
So when the guest asked me, I would have these information in my mind, which would screen out the products that meet the requirements of the guests and recommend them to the guests in time and effectively. In this way, the guest will admit your professionalism. Thus the single conversion rate is improved.
3, third, to be in contact with each other in time
Usually I send them my own micro signals, for example.
For example, a picture, a collection of products

It will enable our guests to understand our supply products well, and there may be a lot of contact ways.
Finally, in order to make our customers believe that we are real manufacturers, we have the ability to provide them with good products. I will also send a WeChat public address of our company: qbsyjgj, strong WeChat public address.

A two-dimensional code is added to enable our guests to understand our company’s dynamics every day and grow with us.

The above is a little experience that my little brother stepped into this industry, and I hope it will help you.

Basic requirements for high speed rotary joint for food industry

2018/5/25 9:06:57 Viewers:8

The high speed rotary joint in the food industry has high requirements for the material and internal structure of the rotary joint. For example, the shell is generally used for the stainless steel shell and the alloy shell. For the very demanding environment, Kun Kun in Tengzhou can provide the structure series -100. material to 1.4571.
High speed rotary joint 14

1. Kai Kun’s food industry uses high-speed rotary joint single channel structure with radial (1B) or axial (1C) interface. The dual channel structure is threaded fixed (2) or rotary (R2) inner tube. The radial interface can be adjusted arbitrarily in the range of 360 degrees.
2. Kay Kun high speed rotary joint ball bearings are lubricated for life, with longer service life and more wear resistance.
3. use the standard external thread adapter with right-handed or left-handed thread G/BSP (ISO228) or NPT (ANSI) to connect with the rotary pressure system.
4. radial and axial housing interface, right-handed thread G/BSP (ISO228) or NPT (ANSI).

The importance of the screw

Although the screw is small, but its function is not small, and especially the pressure riveting screws are more widely used, there are pressure riveting screws, pressure riveting screws, pressure riveting studs, screw screws, spring screws, self pin screws, floating screws, etc.

Change of metal craft gift

The earliest metal handicraft in China is a bronze handicraft unearthed from the ruins of the middle part of the Neolithic culture, such as the Ma Jia Yao culture, the Da Wen mouth culture and the later Qiao family culture. Gold craftwork appeared in the Shang Dynasty. During the Warring States period, there were many kinds of metal materials combined with metal and non-metallic materials (jade, colored glaze) made of handicrafts. The Han Dynasty could produce exquisite gold and silver wire knitted, stacked and inlaid products. The Tang Dynasty was the heyday of metal handicrafts, especially silver handicrafts, and created a gold and silver chisel chisel technology with relief effect. In the song, yuan, Ming and Qing Dynasties, because of the progress of smelting technology and the increase of metal materials, the metal crafts have developed greatly. There are not only a variety of metal and various materials and crafts, but also a variety of crafts. Ancient Chinese famous metal handicrafts include bronze ware of Shang Dynasty, gold and silver of Warring States, bronze mirrors and jewelry of Tang Dynasty, Xuan de stove in Ming Dynasty and cloisonne in Qing Dynasty. In the 70~80 years of twentieth Century, aluminum alloy, titanium, platinum and other metal crafts appeared, and the new technology of corrosion lacquer, titanium cathode oxidation coloring and negative oxygen ion plating were innovated. China’s metal handicrafts, such as Tibet, Mongolia, Miao and other minorities, are also famous. Production organizations in different historical periods are also different. In ancient times, metal handicrafts were mostly enjoyed by the nobility and aristocrats, especially precious metal handicrafts, which were monopolized by the palace handicraft industry. In the Tang Dynasty, because of the development of metal materials, folk production appeared. There was a silver shop in the Song Dynasty. The Yuan Dynasty’s folk production of silverware increased. In the Ming and Qing Dynasties, the two generation of folk metal handicraft was flourishing. The main form was the silver shop of the front shop and the factory. After 1950s, it was produced by factories and distributed by commercial departments.

What are the types of gaskets??

垫片垫片垫片就是垫平的产品: 垫片的型式type of gasket
平垫片 flat gasket
环形平垫片 flat ring gasket
平金属垫片 flat metal gasket
夹棉织物的橡胶 elastomer with cotton fabric insertion
夹石棉织物的橡胶 elastomer with asbestos fabric insertion
夹石棉织物及金属丝加强的橡胶 elastomer with asbestos fabric insertion and with wire reinforcement
无石墨压缩白石棉垫片 non graphited compressed white asbestos gasket
天然白橡胶垫片natural white rubber gasket
压缩石棉垫片 compressed asbestos class gasket
石棉垫片 PTFE impregnated asbestos gasket
夹石棉的缠绕金属垫片 spiral-wound metal gasket with asbestos filler
内环 inner ring
外环，外定位环 outer ring
波纹金属垫片corrugated metal gasket
波纹金属包嵌石棉垫片 corrugated metal gasket with asbestos inserted
双夹套波纹金属包石棉垫片 corrugated metal double jacketed asbestos filled gasket
双夹套垫片 double jacketed gasket
金属包石棉平垫片 flat metal jacketed asbestos filled gasket
整体金属齿形垫片solid metal serrated gasket
槽形金属垫片 grooved metal gasket
环形连接金属垫片 ring joint metal gasket
八角环形垫片 octagonal ring gasket
椭圆环形垫片 oval ring gasket
透镜式垫片 lens gasket
非金属垫片 non-metallic gasket

Copper sleeve for hardware accessories

Copper sleeve, also known as copper roller, is one of the spare parts made of chrome, zirconium and copper for making amorphous ribbon and magnetic material. For the belt throwing machine, it is an important part of the belt throwing machine. The utility model involves a metal and alloy melt flilting technique, specifically a high vacuum single roll belt shedding machine, with induction melting part (1), copper roll flilt part (2), induction melting part (1) equipped with driving gear (12), rack (13) drive mechanism, and copper roll (2) copper roll (21) center and induction melting (21) center. The melting crucible nozzle (15) of the smelting part (1) is eccentrically set; the motor shaft seal (23) driven by the driving copper roller (21) adopts a magnetic fluid seal; the copper roller flinging part (2) is equipped with a gear (24) and a rack (25) driving mechanism that drives the copper roll (21) to move (24). The utility model has the advantages of simple structure, high quality and long service life, and is suitable for the strip rejection of amorphous, microcrystalline alloy magnetic materials, ultra high strength amorphous alloy and other alloy materials.
At present, the most advanced copper roller in China is vacuum casting – forging – special technology – heat treatment – rough machining – UT ultrasonic flaw detection – finished product packaging. Has been selling well in China, exported to Japan, the United States, Sweden and so on.

What are the new structures of the taps?

In order to improve the cutting efficiency of the tap, improve the chip and chip removal situation, reduce the tooth breakage and break, the modern tap has many new structures. (1) screw tip tap: cutting part is worn with chute to form negative edge inclination (see cutting tool). Chip cutting forward is suitable for taper taper hole.
The spiral groove taps: the chip tank is spiral. In processing the right screw thread of the blind hole, the taps should make the right spiral chipping slot to make the chip discharge forward without scratching the thread.
Troughless extrusion Taps: the plastic deformation of metal is formed by the extrusion of the wall of the extruded hole, which is mainly used to process plastic materials such as aluminum alloy and copper, and also for processing low carbon steel and stainless steel. The cone end of the head of the taper is a conical thread. In order to reduce friction and reduce extrusion pressure, the taps section is made polygonal. The extruded tap has high strength and is especially suitable for machining small size holes with diameters below 6 mm.
(4) taps: grinding one tooth along the direction of the spiral line of the knife teeth, thus increasing the chip thickness, which is beneficial to cutting and removing chips, for the processing of stainless steel and other parts.
Content chip tap: chip is discharged from the inner hole of tap and used for machining large size screw holes.
Automatic shrinkage taps: after tapping, the tap teeth can automatically shrink in order to exit quickly.
Broaching tap: a broach with teeth distributed on the helix, commonly used for machining trapezoidal and square tooth threads.
Tungsten carbide tap: mainly used for processing cast iron and non-ferrous metals, cutting efficiency and tool life are higher.

Maintenance and maintenance of metal stamping die

Failure and maintenance of 1. punch
Punch is the most frequently maintained part, and its main fault is breaking. The main reasons are: the length of the punch is too long, the gap between the convex and concave die is not uniform, the unloading plate is not stable during the stamping process, the gap between the punch plate, the discharge plate and the punch is too large, and the waste die waste is excluded from the unblocked.
Therefore, the punch length is generally not more than 35mm to ensure that it has sufficient rigidity; the die and discharge plate should be guided by four small guide columns fixed on the fixed plate of the punch to ensure that the clearance of the convex and concave die is uniform and a number of small punch guides. The unloading screw on the discharge plate is used as an equal height sleeve to ensure that it is punched. In order to ensure the smooth removal of the punching waste, the cutting edge should be lapping regularly to ensure the sharpness.

Failure and maintenance of 2. die
Because the material is soft and the thickness is about 11mm, it is almost close to the no gap mold. In order to ensure the die gap and the quality of the punching hole, the die materials choose 45# steel without heat treatment. In addition, hollowing out of the effective cutting edge of the concave die will result in excessive wear and collapse of the cutting edge of the die. Therefore, the concave die should be designed as a mosaic structure, and more spare parts should be prepared to facilitate the timely replacement.

Maintenance of gap between 3. punch and die
The wear of convex and concave die, especially the wear of the die, increases the gap of the die, causes the edge of the hole to be hairy, the size becomes larger, and the small copper hammer should be used in time to gently strike the rim of the die inlaid with the die without heat treatment. The shape of the die is smaller by the plastic deformation of the die, and the surface of the die is then on the grinding machine. Remove the 11mm on the top, close the upper and lower die, and run the empty stroke 5-10 times until the edge of the punched hole has no edge.
The clearance between the small punch and the discharge plate should be checked regularly to ensure that it is less than the clearance of the mold and to add the lubricant in time. If the gap is too large, the insert on the discharge plate should be replaced in time. The guide column is the key part to ensure the uniform gap between the die and the die. It should not only guide the discharging plate, but also guide the die. Only in this way can the clearance of the die be uniform and reasonable.

Maintenance of 4. positive nailing
The location of pins and pads on flexible circuit boards is ensured by the location of locating holes, which are pre processed on CNC drilling machines. The position and quantity of the guide pin on the die are not fixed. Due to the different environmental temperature and material, the flexible PCB will produce unequal shrinkage, which leads to the deviation of the hole position. Therefore, attention should be paid to adjusting the position and relative quantity of the guide pin to ensure the quality of the product.

5. punching waste jumps and Solutions
Because of the electrostatic action of flexible materials, the punching waste is often adsorbed together, and it is difficult to remove from the leakage of the mold. Some of the waste will even be adsorbed on the punch, which seriously affects the subsequent blanking. Therefore, the depth of the punch into the concave die should be increased to about 1mm, so as to ensure that the waste material is completely removed from the lower die.

Maintenance and maintenance of 6. die
When the mold is not used, it should be coated with rust oil in time, but attention should be paid to the next use of the mold, the oil should be cleaned first, and the oil sucking paper is tested until the oil is adsorbed. Otherwise, the quality of the electroplating will be affected.
When moving the mold, it should be light, stable, and slow to avoid shock and intense vibration. Two. Storage must have a fixed position, to control the humidity of the air, to avoid dust or sundries falling on the shelf, and strictly prohibit directly placed on the cement floor.

Cause and solution of metal mould pulling injury

There are two main reasons for strain during workpiece forming:

One is that the mechanical wear is formed on the surface of the workpiece and the surface of the die convex and concave die because of the macroscopic mechanical concave or uneven surface of the die convex or die surface or the inclusion of other hard particles between the forming material and the die convex surface and the die surface. The solution is to carefully grind the surface of the die convex and concave die and strengthen the production. The management of the environment.

Two is caused by the wear of the surface of the workpiece and the surface of the die convex and concave die. It is also the most common and difficult situation in production. The following detailed analysis of the formation of adhesive wear and some basic measures to reduce the adhesion wear. In order to solve the problem of strain in the forming process of mould and workpiece, the basic principle of reducing adhesive wear should be reduced, and the nature of contact pairs should be changed as the starting point.

The following three pairs of contact pairs are formed, namely, the raw material, the workpiece and the mold, and the mold.

1. through the surface treatment of raw materials, such as phosphating, spraying or other surface treatment of raw materials, forming a layer of non metal film on the surface of the formed material, it can greatly reduce or eliminate the scratch of the workpiece. This method often costs higher, and needs to add additional production equipment and increase production process. This method sometimes has some effect, but it is seldom applied in practical production.

2. adding a layer of PVC film between mold and forming material can sometimes solve the problem of workpiece pulling. For the production line, the continuous supply film can be achieved through the mechanism, and for the stamping equipment produced in the periodic production, each piece of production must be added a thin film to affect the production efficiency. The general cost of this method is very high, and a large amount of waste will be produced. It is advisable to adopt this method for the production of small large pieces of large pieces. In some occasions where the forming load is very small, sometimes the problem of pulling the workpiece can be solved by adding lubricating oil or adding EP (extreme pressure) additive lubricant.

3. by changing the die convex, die material or the surface treatment of the die convex and concave die, the formed material is changed with the convex and concave die. Practice has shown that this is an economical and effective way to solve the problem of pull injury, and is widely adopted at present.

(1) the hard alloy can be used to solve the problem of scratch of the workpiece from the die convex and die material. In general, the convex and concave die made of this material is very high in tensile resistance, and the problem is that the material cost is high and it is difficult to process. For the larger mold, it is difficult to burn the large hard alloy block. Even if firing is successful, there may be cracks in the process, and the yield is low, and some of them are almost difficult to form. In addition, the cemented carbide is brittle, and must be extremely careful in the process of handling, installation and use. In addition, because the structure of the hard alloy is composed of hard tungsten carbide particles and soft bonding phase cobalt, hard tungsten carbide particles have high wear resistance and bite resistance, while cobalt phase is low in hardness and poor in wear resistance. The cobalt phase will be worn first in the process of use, making the surface of convex and concave die uneven, so that the surface of the concave die is uneven. The surface of the workpiece will also show a tensile mark. At this time, the surface of the die and die should be polished and polished before being reproduced. The use of a suitable copper based alloy can also solve the problem of the work of the workpiece, but the hardness of the copper base alloy is low, and the wear and tear is easy to appear. In the case of mass production, the cost of the material is low. For the larger mold, such as the forming die of the automobile panel, the alloy cast iron is used in large quantities. The cast iron can only reduce the strain of the workpiece and can not eliminate the problem of drawing. However, the mould made by this way is usually short in life. After a period of time, if there is a strain, it is necessary to repair the mold and re treat the surface.

(2) it is an economical and effective way to solve the problem of scratch on the surface of the workpiece by the surface treatment of the die, especially the surface super hardening treatment of the die convex and concave die. There are many kinds of surface treatment methods, such as hard chromium plating, electroless nickel phosphorus, special alloy of brush plating and so on. Chemical heat treatment has various kinds of nitriding, boriding, sulphur and so on; surface super hardening treatment includes chemical vapor deposition (CVD), physical vapor deposition (VVD), physical and chemical vapor deposition (PvD), “ID”. Coating treatment. Electroplating, electroless plating and brush plating are different ways to form alloy coating on the surface of workpiece by electrochemical or chemical reaction. The properties of the alloy coating are different. As for wear resistance and occlusal use, hard chromium plating, electroless Ni-P plating and nickel tungsten alloy plating are widely used. These methods can sometimes achieve certain results for smaller forming load or larger die. The problem of such surface treatment is that on the one hand, the hardness of the surface hardened layer is low, and it is easy to wear. On the other hand, the coating is mechanically combined with the matrix material. In the case of large load, sometimes the coating will be flake with a few times, and the effect will be lost once the coating is peeled off. Chemical heat treatment is to heat and heat the workpiece in a medium containing some or some chemical elements. Through the physical and chemical effects of the workpiece and the medium, these or these elements are infiltrated into the surface of the workpiece, and then the appropriate square is used.