1. Participants (persons)

The departments involved in heat treatment production generally include equipment maintenance department, tooling management department, measurement management department, procurement and supply department, and production, technology, and inspection departments (including metallographic testing). In order to control the quality of heat treatment products, all members of all departments must be mobilized to implement full participation. Quality control is process control, and it cannot be done just by a few people or a few departments. In order to achieve full participation in fastener heat treatment quality control. First of all, the responsibilities and powers of all types of personnel must be clarified, and employees must be responsible for solving problems when exercising their rights. Secondly, companies must organize job training in a planned way, improve their operating skills and quality control skills, and conduct qualification certification for important positions (such as high-frequency induction heating). The heat treatment production is highly specialized, and only when employees have sufficient knowledge, skills and experience can they be competent for the job and achieve full participation. Secondly, we must frequently carry out various forms of quality awareness, communication awareness, professional ethics and professionalism education, improve the quality of employees, promote mutual education and mutual learning, and jointly improve the quality of fastener heat treatment. In addition, companies must actively create conditions to encourage employees to innovate and develop and achieve continuous improvement.

2. Equipment tooling (machine)

There are many types of heat treatment production equipment and tooling, and some precision measuring instruments are often used to provide equipment, tooling, and measurement guarantee to improve the reproducibility and reliability of the heat treatment process. Security considerations. Operators are required to strictly abide by the operating rules of equipment, tooling and measuring tools, and implement civilized operation and maintenance. Heat treatment equipment maintenance personnel do the daily maintenance and regular maintenance of the equipment, and carry out improved repairs on the equipment in a timely manner, strictly implement the tooling station equipment management system, and require the operator to use the tooling correctly according to the system and process requirements and return it in time , Require the tooling management department to do a good job in the issuance, storage, maintenance, verification, adjustment, repair, and replacement of tooling. Strictly implement the measurement management system, require operators to correctly use and maintain measurement instruments in accordance with the system and the quality requirements of the heat treatment of fasteners, and require the measurement department to do the calibration, maintenance and identification of measurement instruments in accordance with the regulations. Because sometimes one of the temperature control instruments Little errors will affect the operator's judgment.

3. Fastener material (material)

For the heat treatment production of fasteners, although the materials have been determined at the time of design, their own factors cannot be controlled, but mixing, wrong materials, loss, rust, bumps and deformations will often occur in the treatment, transfer, inventory, and work of heat treatment production. The factors that affect the quality of heat treatment of high-strength fasteners can be carefully and effectively worked by relevant personnel to avoid the occurrence of undesirable phenomena such as mixing, leaking, and wrong materials. The inspection department is required to do a good job of material inspection and status identification (such as using different colors of oil to distinguish different steel numbers), and the material storage department to do a good job in identifying materials, receiving, handling, and storing; the production department works carefully and meticulously , Do a good job in the identification, storage, and custody of the work in progress, discover problems in time and notify relevant departments to deal with them in a timely manner. In heat treatment production, many high-strength fastener material problems can be repaired and solved by corresponding process technology as long as they are discovered in time. For example, the quenched bolts were later found to use ML35 steel for the grade 35# steel. After lowering the tempering temperature, the tensile strength was tested and “released” for use; longer specifications.