产品材质选用优质含金钢（38CrmoALA），经过可调质定性、表面氮化、抛光等工艺精工制作，具有精密耐磨之特点。 The material for the production of precision multi-layer alloy screws is made of high-quality gold-containing steel (38CrmoALA), which is precisely manufactured through adjustable quality and qualitative, surface nitriding, and polishing processes, and has the characteristics of precision wear resistance.
We can not only make samples and manufacture, but also design, survey and manufacture according to the special requirements of customers, or use bimetal repair work on old screws. The service life of bimetal screws is 3-5 times longer than that of ordinary nitriding screws. .
The movement of materials in the extruder screw is studied in three stages, so the design of the screw is often carried out in stages. Since each segment is a continuous channel, in actual production, as long as it can meet the requirements, it is not necessary to divide the screw into three segments. In fact, some screws have only two segments, and some are not segmented. For example, when extruding nylon and other materials with good crystallinity, there is only a feeding section and a homogenizing section. For general screw extrusion of soft polyvinyl chloride plastic screws, all compression sections can be used instead of being divided into a feeding section and a homogenizing section. .
Precision multilayer alloy screw :
The screw consists of a thread and a cylinder. There are long holes along the center line of the screw for cooling water. The tail of the screw is installed in the thrust bearing to prevent the reaction force from pushing out the screw when the rubber is squeezed.
The diameter of the screw is slightly smaller than the inner diameter of the steel sleeve of the fuselage, that is, there is a gap between the diameter of the screw and the inner surface of the steel sleeve, and the gap is generally controlled at 0.002 to 0.004 times the diameter of the screw. Too small clearance will cause the "screw" of the screw, causing wear, and even the phenomenon of stuck screw; too large clearance will affect the amount of extrusion, low production efficiency, and also affect product quality.
Multilayer alloy screw manufacturer price description:
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Production of precision multilayer alloy screws
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