The formulation of self-tapping screw performance standards suggests that our manufacturers should follow special standards as the basic standard while formulating self-developed self-tapping screws and self-tapping screw fastener product standards. There are two standards for identifying self-tapping screws and self-locking and anti-loosening screws or whether their performance is good or bad.

Despite the national military standards, only testing methods are provided. One is the national standard, and the military is the national standard. After entering the tempering furnace, iron oxide occurs due to the effect of carbon and temperature, forming a red rust color; The water quenching medium is used for a long time, and the rust prevention in the medium can be reduced to form part rust.

The way to deal with this question, such as pre-treatment before the screw feed into the heat treatment, that is, clean with alkali or acid, and remove the phosphate film on the surface China Concrete Screws factory of the workpiece. After the blackening agent is used for a period of time, usually half a year, the blackening agent must be exchanged throughout the tank. The application temperature should be maintained between 40-50 ℃, and it must be often mixed when not in use to keep the blackening agent in good condition.

The change to abrupt change will eventually damage the application function. For the above questions, the solutions are as follows: Remove the phosphating film; Improve the heating temperature of zone 1 of the mesh belt furnace; When using oil quenching agent, the reasonable temperature should be below 60°C to reduce the aging process of the oil; The control of the carbon potential in the furnace, under the premise of ensuring no decarbonization, reduce the carbon potential as much as possible; Always check the data of water quenching medium, and add rust inhibitor when necessary. 

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If you find that you are unwell, you must leave the job immediately and report it to the leader. When the machine is working, it is forbidden to reach into the working area of ​​the slider, and it is strictly forbidden to pick and place the workpiece by hand. Tools that meet the standards must be used when picking and placing the workpiece in the die. 

Others are not allowed to press the electric building or the foot switch board, let alone put their hands in the working area of ​​the machine or touch the moving parts of the machine with their hands. When leaving get off work, turn off the idle power and arrange the finished products, side materials and sundries on the job to ensure a clean and safe working environment. After installation and adjustment, move the flywheel by hand for two test punches to check whether the upper and lower molds are symmetrical and reasonable, whether the screws are firm, and whether the blank holder is in a reasonable position.

Operation is strictly prohibited when the machine is faulty. Before entering the work position, all employees should check whether their clothing meets the work requirements. When changing the mold, first turn off the power supply, and then start to install and debug the mold after the moving parts of the punch stop running. You must wait for all other personnel to leave the machine working area and remove the sundries on the workbench before turning on the power source to start the machine.

When operating, you must concentrate your thoughts, chat and cooperate with each other. Before the machine works, check whether the moving part is filled with lubricating oil, then start and check whether the clutch and brake are normal, and run the machine idling for 1-3 minutes. If you find any abnormal sound or malfunction of the machine, you should immediately turn off the power switch for inspection.

Slippers, high heels and clothing that affect safety are not allowed, and those with long hair must wear a helmet. The operator must not operate in a state of irritability and fatigue, so as to avoid accidents and ensure safe operation. Professional is worth entrusting! consult. mainly produces and sells screw factories, screws, stainless steel screws, precision screws, screw manufacturers, special screws, paint screws, electronic screws, plastic screws, Acrylic screws,,,, stainless steel screw factory, aluminum pull stud, anti-theft screw, non-standard screw, screw manufacturer, anti-theft screw, special screw, electronic screw factory, anti-loosening screw, flat screw, Chipboard Screws factory camphor wood screw, etc.The editor will explain to you the safe operating procedures of hardware processing. After the machine is started, one person transports materials and operates the machine.Maintain the correct posture at work and have sufficient energy to cope with the work

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