Factors affecting the quality of heat treatment process for triangular screws

The heat treatment process is directly related to the quality of triangular screws. Therefore, in order to produce high-quality screws, it is necessary to have a mature heat treatment process and control the quality during the heat treatment process. Do you know what factors will affect the quality of the heat treatment process?
An obvious feature of the heat treatment process is to improve the performance and quality of screws by changing the internal structure of the screw material.
Generally, the material and shape of the screw are not changed during the heat treatment process. Due to the fact that after heat treatment, the quality characteristics imparted to screws cannot be directly seen on the surface. Generally, heat treatment mainly changes the elongation, tensile strength, and reduction of area of the material. Therefore, in order to ensure that the heat treatment process achieves practical objectives, special instruments and equipment are required to detect screws.
However, the inspection sampling rate and inspection location are limited, so it is often difficult to achieve 100% inspection for each specification of screws or each batch of screws, and the test results cannot fully reflect the heat treatment quality of the entire batch of screws.
When developing heat treatment processes, they are generally put into production in batches according to the number of heats. Therefore, once problems are found after heat treatment testing, it is easy to bring significant losses to the manufacturer. During the heat treatment process, strict control of the entire production process is required to implement comprehensive quality management.
Currently, the ISO9000 series certification of screws is being carried out in the industry, which is very important and recognized by the industry. According to the requirements for screw heat treatment process in the ISO90002000 standard, it is understood that during the heat treatment process, it is necessary to ensure its quality and control the defect rate within the acceptable range.
1. Participants
Formal manufacturers may have many heat treatment process departments, and the number of participants is also large. In order to control the quality of the heat treatment process, it is necessary to ensure that all members of the department actively participate. In the process of quality control, it is not only necessary to rely on individuals, but also requires the participation of all personnel.
First of all, it is necessary to clarify the responsibilities and authorities of each employee, while neglecting the part of the employee that they complete during the work process. Secondly, it is necessary to regularly arrange relevant training to improve the operational skills and quality control skills of employees. For some important positions, qualification certification is also required. In addition, it is also necessary to regularly carry out professional ethics education to ensure that employees have a sense of quality and communication.
2. Equipment tooling (machine)
With the development of technology, the types of heat treatment production equipment are becoming increasingly diverse, and sometimes precision measuring instruments are needed. Mature process equipment is a prerequisite to ensure the smooth completion of the public welfare of screw heat treatment. Of course, operators also need to master the operating procedures of various equipment to ensure safety and reliability during operation.
When using equipment, it is necessary to pay attention to the maintenance and repair of the equipment, customize a equipment management system, keep equipment operation records, and properly keep measuring instruments. After use, they should be promptly returned to their original locations.
3. Screw material
When conducting heat treatment processing, generally, the materials have been determined before processing, but in the actual processing process, sometimes there may be mixed materials, wrong materials, deformation, and other situations that affect the quality of screw heat treatment. Therefore, the inspection department should do a good job in material inspection.
During the heat treatment process for triangular screws, once quality problems are found, they should be promptly repaired and resolved.