How to make a high quality Bolt?

As a Rail Spike Manufacturer, I will introduce the bolts.
Bolts: mechanical parts, cylindrical threaded fasteners with nuts. A type of fastener consisting of a head and a screw needs to cooperate with a nut to fasten and connect two parts with through holes.
There are many types of bolts.
Hex Bolt
Divided according to the connection force: there are ordinary bolts and bolts with hinge holes.
According to the shape of the head: Hex Bolt, round head, square head, countersunk head and so on.
According to the thread length, it is divided into two types: full thread and non-full thread.
There are two types of coarse teeth and fine teeth according to the thread profile. The coarse profile is not displayed in the bolt symbol.
Bolts are divided into eight grades 3.6, 4.8, 5.6, 5.8, 8.8, 9.8, 10.9, and 12.9 according to their performance grades. Among them, bolts of grade 8.8 and above are made of low-carbon alloy steel or medium-carbon steel and are heat-treated. They are generally called high-strength bolts, 8.8 Below the level is commonly known as ordinary bolts.
Ordinary bolts can be divided into three grades A, B, and C according to the manufacturing accuracy, grades A and B are refined bolts, and grade C is rough bolts. For connection bolts for steel structures, unless otherwise specified, they are generally ordinary coarse C-grade bolts.
Of course, there are other special-shaped bolts and special-purpose bolts, which will not be introduced.
To make a bolt, you need to design a bolt first
If you want to do a good thing, you must first define his characteristic requirements. Here are the technical requirements. How to define the technical requirements is actually very rare. You must know the relationship between the functional requirements and the technical requirements. Technical requirements From the functional requirements, the functional requirements are from the user or the requirements of the use environment or other external conditions.
How can we translate the functional requirements into technical requirements? This requires a certain amount of technical accumulation. To give two simple examples, if you want to make the bolt's fatigue resistance better, you must design the bolt head transition fillet, The fillet of the bolt root, thread and screw transition, and then reflect this designed information on the design drawing or technical requirements. For another example, in practical applications, bolts are not expected to be corroded for a long time in a relatively corrosive environment. You need to choose the appropriate surface treatment or bolt material to meet the requirements of the application environment according to the corrosive environment according to corresponding standards.
In addition, the performance level of the bolt, the thread tolerance level, the dimensional accuracy level, and the surface treatment method are all factors to be considered in the design. Even the sequence of some processes needs to be defined during the design.
Our company also has Railway Bolts on sale, welcome to consult.

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