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. 

Megosztás a facebookon

Electronic setting equipment deployment components and other aspects.Plastic screws (suitable for ROHS) not only have balanced mechanical properties, but also have strong chemical resistance.The editor will explain to you the corrosion resistance of plastic screws Metal materials still appear most frequently in our sight, and signs of rust and corruption are also common, but everyone knows that this has caused huge waste and economic loss.

We have gradually realized this problem, and we are trying to find better materials to replace metals., are professional and worthy of entrustment!They are widely used in automobiles, fine machine parts, and electrical appliances. For domestic users, provide a convenient and fast procurement platform. Aviation, automobiles, medical care, food, etc.

The word 'burden reduction' is not only used in survival, it has also been extended to the industry. In the fastener industry, plastic screws came into being., are professional and worthy of Wholesale Concrete Screw manufacturers entrustment! consult.. have started small trials and achieved good results, and plastic materials have made great tribute to 'burden reduction'.

In the case of global resources becoming increasingly scarce, engineers have started to study for a long time, and can replace various materials of metal. Small figure, great achievements'' is our best explanation for it, and Five-linked plastic parts'' are also born because of plastic screws. It is necessary for it.

Megosztás a facebookon