The correct selection of fastener materials in fastener manufacturing is an important part because the performance of fasteners is closely related to their materials. Cold heading steel is a steel for fasteners with high interchangeability produced by cold heading forming process. Because it is formed by metal plastic processing at room temperature, the deformation of each part is large, and the deformation speed is high. Therefore, the performance requirements for cold heading steel raw materials are very strict.
(1) If the carbon content is too high, the cold forming performance will decrease, and if the carbon content is too low, the mechanical performance requirements of the parts cannot be met.
(2) Manganese can improve the permeability of steel, but adding too much will strengthen the matrix structure and affect the cold forming performance.
(3) Silicon can strengthen ferrite to reduce cold forming performance and material elongation.
(4) Although boron has the effect of significantly improving the permeability of steel, it will also increase the brittleness of steel. Excessive boron content is very detrimental to workpieces such as bolts, screws and studs that require good comprehensive mechanical properties.
(5) Other impurity elements, their presence will segregate along the grain boundary and cause grain boundary embrittlement, and damage the mechanical properties of the steel should be reduced as much as possible.
Advantages of Plastic BarrelsApril 18, 2023Plastic drums, also known as polyethylene drums, are ideal containers for storing chemicals, foods, medicines and other items. Before using them, you need to know some important things to ensure that ...view
Introduction to TinplateJune 19, 2023We mainly focus on stainless steel barrels and accessories. Today, we will introduce the material of metal waterproof cover, tinplate.Tinplate, also known as SPTE, is a cold-rolled thin steel plate wi...viewDrum fittings must be compatibleMay 19, 2023Many factors must be considered when selecting new steel drum fittings for shipping hazardous and non-hazardous goods packaging. One important reason for this is that drum producers must carefully con...viewGalvanizing ProcessOctober 25, 2023Today, the main focus is on the surface treatment galvanizing process of stainless steel products. The purpose of galvanization is to prevent corrosion on steel. Steel is susceptible to corrosion in t...viewCan't Open the Steel Drum Cover? Let Me Teach YouApril 28, 2023Steel drums are widely used in petroleum, chemical products, food and other fields. In order to prevent leakage of liquid and its corrosiveness, the metal lid and other accessories are generally used ...viewReasons Why Steel Price RisingJuly 1, 2022Currently, steel prices continued to rise. The reasons are even more complex.First, market demand is picking up. Since May 2020, China's economy has gradually returned to normal, and China's d...view
EN
ko 
fr 
de 
es 
it 
ru 
pt 
ar 
vi 
th 
