Material Selection and Performance Requirements for Cold Heading Process of Fasteners (Part II)

　　FastenersCold heading is widely used in various industrial sectors such as aerospace and automobiles. It is mainly used for the processing technology of fasteners such as bolts, studs, screws, nuts, etc. It has the technical characteristics of smooth operation, high precision, high production speed, and easy automation. Then, Let's learn about the selection and performance requirements of cold heading processing materials for fasteners!

Selection of 3. cold heading forming oil

1) Excellent extreme pressure lubrication performance, high temperature resistance, extreme pressure wear resistance, rust resistance and high temperature oxidation stability. Improve the precision and glossiness of processed products, prevent mold sintering, meet the multi-station forming processing of standard parts and non-standard parts, and can fully withstand the processing of stainless steel workpieces with cold heading.

2) The lampblack and "floating fog" are controlled as small as possible, which can meet the strict requirements of multi punch processing nuts including strong shrinkage type.

3) It has good processing performance for hollow, high-strength bolts, sleeves, stainless steel hollow, hollow rivets and other products with large deformation.

4) It can effectively protect the punching rod (punching needle) and the mold, extend the life and reduce the overall cost.

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

6) High heat resistance is good, not easy to produce silt. Low odor, low smoke, protect the operating environment.

7) It has a certain degree of rust resistance and can meet the requirements of rust prevention between processes in the processing process.

8) to meet the harsh cold heading of stainless steel forming processing and large deformation of carbon steel forming processing.

Precautions for 4. operation of multi-station cold heading machine

1. Before cold heading of fasteners:

1) Check that the knife plate, knife post, punch, die, etc. are not completely collapsed, installed correctly and fastened firmly.

2) After adjusting the cutting mechanism, be sure to check the gap between the dies. It is strictly forbidden to move the device without inspection.

3) When the cutting rod is broken, be sure to remove the roller of the cam groove before opening the device.

4) Carefully check the status of the safety protection device of the equipment to prevent falling off and failure due to severe vibration.

5) Check whether the oil circuit of the cold heading lubrication cooling system is unobstructed. If there is any foreign matter, clean it immediately. If the cold heading forming oil is insufficient, add it in time.

2. Fasteners hit during cold heading:

1) When moving the equipment, please move the main motor to rotate the flywheel only when the feeding device is cut off. Please wait until the flywheel is at full speed before opening the feeding device. When stopping the equipment, stop the main motor after disconnecting the supply device.

2) The slider cannot stop at the "dead zone" position. For example, when the slider stops in the "dead zone", it only needs to be modified by moving the flywheel with an artificial disk, and the device cannot be moved.

3) The processed bar or dish material must be cleaned. Please do not cut off the burrs on the head and do not use flat materials.

4) Always pay attention to the operating conditions of the tray, and stop immediately when you find chaos. At the end of the material processing, the tail of the material must be released from the tray.

fasteners after cold heading work and then hit:

1) Turn off each system of the multi-station cold heading machine in turn, and then cut off the power supply.

2) Clean the cold heading and apply anti-rust oil on the workbench.

3) Record every operation or maintenance.

4) When a failure occurs, the multi-station cold heading must be stopped immediately to find out the cause and eliminate the danger.

The above introduction is the fastener cold heading process material selection and performance requirements, if you need to know more, you can contact us at any time!