A brief introduction to butt welding elbow_Yuhuan Yupu Machinery Co., Ltd.

What are the requirements for raw materials for cold heading machines? 2021-06-24

1. The chemical composition and mechanical properties of the raw materials for cold heading of the cold heading machine should meet the relevant standards of the multi-station automatic cold heading machine. To 2. The raw materials must be spheroidized and annealed, and the metallographic structure of the material is spherical pearlite grade 4-6. To 3. The hardness of raw materials, in order to reduce the tendency of material cracking as much as possible, and to improve the service life of the mold, it is also required that the cold drawn material have the lowest possible hardness to improve plasticity. Yupu cold heading machining indicates that the hardness of raw materials is generally required to be HB110~170 (HRB62-88). To 4. The full-inch accuracy of cold drawn materials should generally be determined according to the specific requirements of the product and the process conditions. Generally speaking, the multi-station cold heading machine has lower requirements for reduced diameter and forced dimensional accuracy. To 5. The surface quality of cold drawn materials requires that the lubricating film is dull and dark, and the surface must not have defects such as scratches, folds, cracks, napping, rust, oxide skin, and pits and pits. To 6. It is required that the total thickness of the decarburized layer in the radial direction of the cold drawn material does not exceed 1-1.5% of the diameter of the raw material (the specific situation depends on the requirements of each manufacturer). To 7. In order to ensure the cutting quality during cold forming, the cold drawn material is required to have a harder surface and a softer core. To 8. Cold-drawn materials should be subjected to a cold upsetting test. Yupu cold-heading machine processing means that the cold-heading machine also requires the material to be less sensitive to cold work hardening, the better, in order to reduce the deformation resistance due to cold work hardening during the deformation process Increase.

A brief introduction to butt welding elbow 2021-06-24

The shape of the elbow is the same as the normal seamless elbow or straight seam elbow. It is also divided into 90° butt welding elbow, 45° butt welding elbow, 180° butt welding elbow, etc., this kind of butt welding elbow The cost of the head is low, and it is suitable for large-diameter elbows. For example, the size of 600 or more can be butt-welded. And there is a special implementation standard for butt-welded elbows that is the national standard 13401-97. This standard gives The specific dimensions of the butt-welded elbow and its welding method are presented, which is a useful document.

Stainless steel flange model specifications and usage matters 2021-06-24

There are one-piece, two-piece, three-piece, etc. stainless steel flanges. At present, three-piece stainless steel flanged ball valves are more commonly used. The size ranges from 0.5 to 2 inches. The valve body is processed with an ISO 5211 standard Perform structural installation according to the mouth. The valve is a full-bore ball valve, and the handle can be locked at the switch position. The pressure end of the stainless steel flanged ball valve has high temperature resistant and easy to connect FKM sealing parts. The good stainless steel ball and stem allow it to be widely used in industrial engineering.

What standard parts are generally used for multi-station cold heading machines? 2021-07-26

The cold heading machine can be divided into bolt cold heading machine, nut cold heading machine, steel ball cold heading machine and so on. Yupu cold heading machine processing means that multi-station generally refers to cold heading machines with three stations and above. Among them, the three stations generally produce ordinary internal and external hexagon bolts and nuts, the four stations and above the production of bolts and nuts with high quality requirements, the bolts with large deformation, high-strength bolts, special-shaped parts and parts.

The importance of cold heading machines to the industry 2021-07-26

Cold heading machines are widely used in various industrial sectors such as aerospace vehicles. With the development of modern industry and the increasingly fierce competition in the manufacturing industry, cold heading technology has become an indispensable metal plastic volume forming technology due to its economical and efficient process characteristics. One of the important processing methods. Yupu cold heading machine processing means that the structure of the cold heading machine is in the process characteristics that it needs to work smoothly, high precision, high production rate and easy to realize automation. Its transmission components are driven by crank connecting rod mechanism, cam mechanism, and gear mechanism. , Yupu cold heading machine processing indicates that to some extent its motion performance will be related to the realization of the entire machine's movements, and it will also directly affect the product performance and quality of the cold heading machine. The machine body of the cold heading machine is an important basic component that supports and accommodates various moving parts in the machine, and is a key component to ensure the accuracy and reliability of the moving parts.

Maintenance principle of cold heading machine 2021-07-26

Many manufacturers have some minor problems in the process of using Lily cold heading machine. Some manufacturers don't know much about the machine, so they dismantle the cold heading machine to repair it by themselves, resulting in secondary damage to the machine. To Therefore, Yupu Cold Heading Machining is here to remind everyone that if the maintenance technology cannot be ensured, do not disassemble or assemble it privately. Or, before self-maintenance, understand the cause of the failure first, and target the underground operators instead of disassembling and assembling randomly. For example, if the cold forging machine has been used for a long time, there will be grease, carbon deposits, deposits, and rust marks inside. When you step on the brake pedal, the position is very low, and when you continue to step on the pedal, the pedal can gradually rise. However, the reaction force of the Biaolong laser marking machine is small and the braking effect is not good, indicating that there is air in the brake oil pipe or brake cylinder. Should be excluded.

Explain the standard and non-standard parts of mold accessories in detail 2021-07-26

Yupu professional non-standard parts believe that mold accessories refer to the general name of metal accessories used in stamping molds, plastic molds or FA automation equipment exclusively in the mold industry. According to the name of the industry, it is roughly divided into two types of standard parts and non-standard parts: 1. Standard mold parts Generally speaking, standard parts of molds are standardized, and they do not need to be specially made and are popularized. Standard parts can be divided into plastic mold parts and hardware punching mold parts. Plastic mold accessories roughly include: single-section shooter, double-section shooter, double-section shooter, flat tip, flat tip, positioning column, plastic mold guide sleeve, straight sleeve, center column sleeve, plastic mold guide sleeve, straight sleeve, Center support sleeve, positioning column, square auxiliary device, three-dimensional positioning block group positioning auxiliary device, A, B, C type irrigation nozzle, fixed ring A, B type, standard mechanical switch, square auxiliary device, small Nozzle standard special nozzle bushing, large nozzle standard special nozzle bushing, mold date indicating device, resin switch, water stop, plastic mold finished tip, pen core, pen tube, small pull rod C-type, diagonal support tip , Pull pin, plastic mold guide post, pull rod, back pin, spring, thimble, tube, trash nail, etc. Hardware punch die accessories roughly include: H-type straight punch, A-type secondary punch, edge forming punch, K-type sprout punch, B-type guide punch, A-type sub-punch, punch, concave Moulds, bushings, high-speed steel round bars, ultrafine tungsten steel round bars, powder high-speed steel round bars, floating pins, floating pins, stop screws, positioning pins (fixed pins), contour sleeves, guide posts, Guide bushes, precision chrome-plated guide pins, precision copper-titanium alloy guide bushes, self-lubricating guide bushes, inner guide pillar assemblies, sliding guide pillar assemblies for mold bases, ball guide pillar assemblies for mold bases, detachable ball guide pillar assemblies , Outer guide column assembly, steel ball sleeve (cage), independent guide column, hexagonal screws, contour screws, etc. 2. Mold non-standard parts Non-standard mold parts generally refer to molds with different specifications and shapes. Compared with standard molds, molds with special structures are called non-standard parts. Generally speaking, non-standard mold parts are processed by suppliers according to the drawings and requirements provided by customers.

Seven production processes of heat shrinkable tubing 2021-07-26

It is necessary to understand the production process of heat shrinkable tubing so that we can judge the pros and cons of the product. Generally, the heat-shrinkable tubing we come into contact with is made by the irradiation cross-linked polyethylene process. Yupu Cold Forging Machine has organized seven production processes. The first is the ingredients. In the production of heat shrinkable pipe fittings, the ingredients are a very important step, and the raw materials should be mixed according to the mature protection. The formula of heat shrinkable tubing directly determines the main performance, quality and cost of heat shrinkable tubing. After the ingredients are completed, granulation is carried out. The granulation is to make the masterbatch after fully mixing the prepared raw materials. During this period, internal mixers, granulation equipment, etc. will be used. After the above process is completed, the next thing to do is to squeeze out. In the production process of heat shrinkable tubing, the extrusion process is also very important. In this process, a suitable extruder will be used to extrude the masterbatch made by the previous process into a qualified extruder under the set extrusion process parameters. Of pipes. The extruded pipe determines most of the parameters of the heat shrinkable tubing specifications, such as the minimum inner diameter after shrinkage, the maximum wall thickness after shrinkage, etc., and even affects the partial wall of the heat shrinkable tubing. Irradiation is the top priority in the production of high-quality heat shrinkable tubing. The function of irradiation is to appropriately cross-link the polyethylene molecular segments of the heat-shrinkable tubing, so that the heat-shrinkable tubing has shrinkage properties. After the irradiation is completed, the product should be expanded. The so-called expansion refers to heating the heat-shrinkable sleeve to a highly elastic state. Under the action of external force, the cross-linked molecular segments of the heat-shrinkable sleeve move relative to each other, thereby reducing the heat The shrink tube becomes a larger diameter tube. After doing this, the manufacturing process of the heat shrinkable tube is basically completed, and of course, printing on qualified products is necessary. As for the content of printing, the content of the printing can be based on the habits of the manufacturer and the requirements of the user. After doing this, you can paste the production date, manufacturer's brand, certificate of conformity and other packaging as required and leave the factory. At this point, the heat shrinkable tubing production process is completed. The production process of heat shrinkable tubing is summarized as the seven major processes of ingredient, granulation, extrusion, irradiation, expansion, printing, and packaging. I believe everyone will understand after reading the article. I hope that the introduction of the editor can It will help you when choosing heat shrinkable tubing!