First, when quenching the T-type nut, it is necessary to use a silicate cleaning agent to clean up the impurities attached to the surface, and then carefully rinse to prevent impurities from remaining on the T-type nut and affecting the use of the T-nut.
Second, when carrying out pickling, we must grasp the concentration of acid, otherwise the effect of pickling will not be obvious.
Third, after the T-type nut is tempered, its color may change, and after soaking the T-type nut in the ether for a period of time, an oily substance is found, indicating that the T-type nut has not been treated cleanly.
