Knowledge
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May-2022Measuring method of machining accuracy of precision parts
Precision parts processing can be divided into measurement and relative measurement according to whether the reading value of the measuring instrument directly represents the value of the measured size.Absolute measurement: The reading value directly...26
May-2022Precision parts processing requirements for material quality
What are the requirements for the material quality of precision parts processing? In the process of precision parts processing and manufacturing, due to the different production requirements and conditions of various parts, the manufacturing process ...14
May-2022The difference between the two production processes of carriage bolts
The carriage bolt is not one of our common standard screws and has a wide range of uses. It is widely used in many electronics, electrical appliances, machinery manufacturing, and furniture production. When we manufacture carriage screws, there are t...12
May-2022Method for surface treatment of non-standard bolts
In the production process of non-standard bolts, it is very important to do a good job of surface treatment, so what is the method of surface treatment in the production of non-standard bolts? Now let's get to know each other.1. Mechanical platin...10
May-2022The process of pickling in screw making
Friends who have been in the metal manufacturing industry must know about pickling. Pickling is to remove the oxide film on the metal material, and while removing the oxide film, a phosphate film should be formed on the surface of the metal. Don'...08
May-2022What are the aspects of non-standard custom screws
1. It is necessary to look at the color of the non-standard custom screws. If the surface has poor electroplating such as whitening, blackening, and contamination, it is necessary to report to the manufacturer and let them provide good non-standar...06
May-2022Cleaning method of residual oil of hot-dip galvanized bolts
The cleaning of hot-dip galvanized screw residual oil is mainly for the cooling oil attached to the surface of the fastener during cold heading or cutting, and the residual oil on the surface of the fastener after quenching in the heat treatment oil....04
May-2022The threads of hot-dip galvanized screws are roughly divided into several cat...
1. Transmission thread: There are trapezoidal, rectangular, saw-shaped and triangular tooth shapes.2. Sealing thread: used for sealing connection, mainly pipe thread, tapered thread and tapered pipe thread.3. General thread: the tooth shape is triang...02
May-2022The difference between hot-dip galvanized anchor bolts and hot-dip galvanized...
1. Stud bolts, also known as stud bolts or stud nuts, are usually used to connect thick plates and hexagonal bolts in inconvenient local areas, or to connect thick and long bolts. I will. Stud fixed connection function is suitable for mining equipmen...30
Apr-2022Causes of white rust on hot-dip galvanized screws
What are the reasons for the white rust of hot-dip galvanized screws1. Causes of white rust on hot-dip galvanized bolts:1. After the hot-dip galvanized screws are disassembled, they are stacked directly on the ground.2. Bad weather conditions, such a...28
Apr-2022Common mistakes in the use of non-standard screws and nuts (2)
1. Thicken the nut.It is often misunderstood that thickening the nut will increase the number of working turns of the thread, thereby increasing the reliability of the coupling. In fact, the thicker the nut, the more uneven the load distribution betw...26
Apr-2022Common mistakes in the use of non-standard screws and nuts (1)
1. The holes of non-standard screws and nuts do not match.Non-standard screws and nuts on machines that are subject to lateral loads and shear forces, such as driveshaft bolts and flywheel bolts, are transition-fitted to the bolt holes. The device sh...
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