The furnace type should be determined based on different process requirements and the type of workpieceEffect of filler metal on vacuum brazing of cemented carbide and steel 1. For those that cannot be produced in batches, the sizes of the workpieces are not equal, and there are many types, the process is required to be versatile andVacuum sintered powder alloy high speed steel For versatility, a box furnace can be selected. 2. When heating long shafts, long screw rods, pipes and other workpieces, deep well electric furnaces can be used.Heat treatment process for wide and thick plates 3. For small batches of carburized parts, a well-type gas carburizing furnace can be used. 4． For the production of large quantities of automobile, tractor gear and other parts, a continuous carburizing production line or a box-type multi-purpose furnace can be selected. 5. When heating stamping plate blanks for mass production, it is best to use rolling furnaces and roller bottom furnaces.Process Of Preventing Deformation And Cracking Of Mold By Vacuum Heat Treatment