The processing principles of special screws may not be common to ordinary people unless they go to the screw factory to learn and visit in person. Screws and their manufacturing have a history of more than 200 years. Two processes can be used to process screw threads: cutting and extrusion.
Cutting processing is generally performed by lathes, that is, round bar materials suitable for the outer diameter of special screws are used and cut into thread shapes by turning tools. This processing method is suitable for processing with small batches and high-precision requirements, but the processing cost is high and the efficiency is low.
Extrusion processing is carried out through special screw equipment, which is usually called a thread rolling machine in screw factories. By using an iron rod with a diameter between the larger size at the top and the smaller size at the bottom of a special screw, the fluidity of the metal material is used to form it under the high-speed extrusion of the mold. Extrusion processing can achieve large-volume, automated production, and has the advantages of stable quality, low cost and high efficiency.
Compared with conventional screws, special screws may encounter the following special problems during use:
Size, material or processing accuracy issues: Special-purpose screws may require higher processing accuracy or the selection of finer materials, otherwise the expected use results may not be achieved.
Differences in installation methods: Special screws may have different installation methods and tools. If they are not installed in the specified way, the use effect may be unsatisfactory.
Differences in corrosion resistance: Special-purpose screws may require better corrosion resistance, which may cause special problems when used in marine environments or chemical environments.
High operating and usage requirements: For special-purpose screws, special operating requirements may be required, such as a higher level of operating skills, otherwise you may encounter problems during use.
High price: Special-purpose screws usually require higher material cost and processing precision cost, so the price is usually higher.
Therefore, when selecting and using special screws, the above factors need to be considered and ensure that special requirements are met. If necessary, professionals can be consulted for accurate advice and guidance to ensure the correct use and application of special screws. The processing principles and special issues of special screws need to be considered comprehensively to meet the requirements of specific applications.
