Detection Method of Stainless Steel Screw Thread

The detection of stainless steel screw has many aspects. For example, check the head of stainless steel screw to see if the head of stainless steel screw will burst. There is also the detection of various dimensions of stainless steel screw. See if it meets national standards or customer requirements. Today, the inspection of stainless steel screw thread is introduced.



The measurement of stainless steel bolt thread is to assemble the stainless steel screw on the product material, so as to make the thread more critical and tighten the product material better. Stainless steel screw thread inspection is to ensure the assembly position relationship between stainless steel screw threads. In order to ensure the tightness of stainless steel screw threads, enterprises must take certain internal control measures. Because our technicians do not realize this, mechanical products often leak, export products often return, which seriously affects the competitiveness of our products in the international market. In the 21st century, ISO, Europe and North America have generally increased the number of Inspection Gauges for sealing pipe threads. China should keep up with the latest changes in the world.



Principle of tolerance zone for inspection of stainless steel outer hexagonal screw thread: In the thread standard, there are tolerance zone diagrams along the thread profile of stainless steel screw and tolerance numerical tables of various diameters. The vast majority of Chinese technicians believe that the thread profile of stainless steel nut and thread gauge should fall within the tolerance zone stipulated in the thread standard, and the thread quality should be no problem. When they find that the thread quality of qualified products is very poor, they do not know what to do and where the problem lies. In fact, stainless steel screw thread is a complex geometry, it has many technical parameters. If we want to control the quality of the thread completely (using tolerance zone principle), we need to measure all the parameters of the thread. This will take a lot of time and high cost of detection, which is not feasible in actual production. And in different occasions, the various parameters of stainless steel screw threads have different roles and requirements. Some parameters can be guaranteed by production technology without separate inspection. At present, the thread pass and stop gauge used in our country originated from the Taylor principle invented in 1905 in Britain. It has the advantages of good economy and guaranteed assembly, but the disadvantage is that the quality assurance level of threads is low and there are many technical loopholes. China should earnestly study and draw lessons from the US stainless steel screw thread inspection system.



Stainless steel screw thread detection, generally we produce stainless steel screw manufacturers prior test stainless steel screw wire. Because the quality of stainless steel screw wire is directly related to the quality of stainless steel screw thread. Good stainless steel wire rubs out the teeth better. After the stainless steel screw thread is rubbed, we use the detection tool - mdash; pass gauge to check whether the stainless steel screw thread can pass, stop gauge.