How to check to determine the quality of the stainless steel belt

1, stainless steel tube if in appearance to the heating parts of oil, oil scale thickness of attached parts and other parts of the oxide coating thickness and composition are different, and carburizing will happen. Subcutaneous matrix metal oxide were part of carburizing will severely eroded by acids. The initial burning of heavy oil burner jet of oil droplets, if attached to the workpiece, the influence is very big also. So, operating official not straight with the hand touch touch with stainless steel pieces, don't make the workpiece with new oil. 2, artifacts, such as have a cold appearance of lubricating oil and so on, it is necessary in trichloroethylene full degreasing degreasing agent, caustic soda solution and then wash with warm water, then heat treatment. 3, stainless steel belt if appearance are sundry, especially organic matter or ash attached workpieces, heating, of course, will have an impact on the scale. 4, the differences between the stainless steel belt furnace atmosphere in furnace atmosphere at the local, the formation of scale will also have change, this is also the cause of uneven after pickling. So, when heated, each part of the furnace atmosphere is necessary. 5, and heating the workpiece straight touch touch objects, it is necessary to use after drying ability adequately. However, if placed at room temperature after drying, in under the condition of high humidity, moisture will condense on the workpiece appearance. So, it is best to dry before use. Six, stainless steel belt if handled a localized before heat treatment with residual scale, scale after heating the remaining parts and not the part of the scale, there will be differences in thickness and composition of scale, cause uneven appearance after pickling, so should not only pay attention to the final heat treatment, but also to fully attention to intermediate heat treatment and pickling. 7, gas or oil flame straight stainless steel band appearance and didn't touch to touch touch of local there are differences in the scale of what has happened. So it necessary to make the heat treatment unit not straight touch touch the fire mouth.