The cold head nut process is a plastic deformation that occurs when the metal is applied under external force, and the metal volume is newly dispersed and transferred by means of the mold to form a required whole machine or blank processing method. It is mainly used to make bolts, nuts, nails, rivets and steel balls. The forging material can be copper, aluminum, carbon steel, alloy steel, stainless steel and titanium alloy. Through the cold heading machine equipment, the disc element or the bar material is driven to feed, sequentially feed, cut, press, press, punch, and several processes. The above Yida Yunrun petrochemical brief introduction of how to choose the cold mink process original information:

First, the selection of cold heading equipment

(1) Equipped with variable frequency speed regulation assembly, it can be steplessly regulated within a certain range.

(2) The body is made of forged iron with increased alloy, which has high tensile strength and good wear resistance.

(3) Adopting the secondary gear transmission system, the transmission efficiency is high and the transmission torque is large.

(4) Equipped with pneumatic gathering brakes, low electrical and mechanical power consumption.

(5) The cutting system adopts the guide plate to drive the cutter bar, the guide plate to move, the intercepting force is transmitted linearly, the force is strong and the dynamic balance is good.

(6) The multi-station cold heading machine adopts the closed clamp to transfer the workpiece, and the clamp system can be turned or translated to facilitate the molding process.

(7) The connection between the crankshaft and the body and the striking connecting rod adopts the high wear-resistant alloy copper tile to connect, the bearing capacity is large, the application life is long, and the training cost is low.

(8) Equipment fault detectors and safe cover assembly, take the initiative to stop when equipment is faulty, give the equipment and tooling the biggest cover.

(9) The feed box is installed with thrust assembly to improve the feeding accuracy.

(10) The smooth system oil path plan is concise and efficient, and can be used to cover the impact of the punch rod and the workpiece on the basis of the package recirculation filtration.

Second, the selection of the original data of the workpiece

(1) The original data must be stopped by spheroidizing annealing, and the metallographic structure of the data is spherical pearlite.

(2) In order to minimize the cracking tendency of the data, the application life of the mold is also improved, and the cold drawing material is required to have as low a hardness as possible to improve the plasticity.

(3) The accuracy of the original data should be as usual according to the detailed request of the product and the process environment. The multi-station cold heading machine usually has lower requirements for reducing the diameter and shrinking the dimensional accuracy.

(4) The outer quality of the original material is requested to have a matte dark color of the smooth film, and there are no shortcomings such as scratches, folds, cracks, napped, rust, scale and pits.

(5) The total thickness of the requested material radius deviation decarburization layer shall not exceed 1% of the original data diameter.

(6) In order to ensure the quality of the interception during cold forming, the requested material has a hard outer condition and a soft core.

(7) The material should stop the cold heading test because the cold work softens to increase the deformation resistance. The lower the sensitivity of the requested data to cold work softening, the better.

Second, the selection of cold heading molding oil

(1) It has excellent extreme pressure smoothing function, low temperature resistance, extreme pressure and abrasion resistance, rust resistance and low temperature anti-oxidation and tranquility. Improve the precision and smoothness of the machined parts, avoid mold sintering, and satisfy the multi-station forming process of standard parts and non-standard parts, which can fully handle the processing of cold-rolled stainless steel workpieces.

(2) It is possible to reduce the soot and "stray fog" to a minimum limit, and to satisfy the strict request for a multi-die punching nut with a strong shrinkage mold.

(3) It has a good processing function for products with larger deformations, such as hollow, high-strength bolts, sleeves, stainless steel hollows, semi-tubular rivets, etc.

(4) It can be used to cover the punching rod (punching needle) and the mold, extending the application life and lowering the cost.

(5) The heat dissipation effect is good, and the temperature of the workpiece and the mold part in the cold forming process is avoided.

(6) High temperature resistance is good, and it is not easy to produce sludge. Low breath, low smoke, cover the operating environment.

(7) It has a certain anti-rust property and can satisfy the anti-rust request between processes.

(8) Satisfied with the cold-stained stainless steel forming process and the large-variable carbon steel forming process.

The above is the original method of cold heading nut technology, cold heading equipment and cold heading oil selection method, the application of the original data requested by the matching process can be useful to avoid the quality of the workpiece. Yida 渤 Run high-end nut common cold 镦 molding oil adopts the high-performance vulcanized lard and sulfurized fatty acid ester which is self-developed and produced, which is a compromise between the high-pressure and high-pressure premise. The amount of deformation is processed by cold and hot working methods. It is widely used in the cold heading processing of difficult-to-machine materials such as stainless steel and high-alloy steel in the fields of automobiles, ships, aerospace, etc. It has excellent extreme pressure anti-wear function, does not form a workpiece pulling and pulling, and has the advantage of extending the die life. In the practical application, it has won the same praise from domestic and foreign fastener companies.