"Four fire" With the Grinding Balls heating temperature and cooling method of different, but also evolved a different heat treatment process. In order to obtain a certain degree of strength and toughness, the combination of quenching and tempering process, known as the quenched and tempered. After some alloys have been quenched to form a supersaturated solid solution, the Grinding Balls are kept at room temperature or slightly above the appropriate temperature for a longer period of time to increase the hardness, strength, or electromagnetism of the alloy. This heat treatment process is called aging treatment.
The Grinding Balls pressure processing deformation and heat treatment effectively and closely combined to make the workpiece to obtain good strength, toughness with the method known as the deformation heat treatment; in negative pressure atmosphere or vacuum heat treatment is called vacuum heat treatment, it not only Can make the workpiece is not oxidized, not decarburization, Grinding Balls to keep the workpiece surface smooth after treatment to improve the performance of the workpiece, you can also pass through the chemical penetration agent for heat treatment.
Surface heat treatment is only the surface of the workpiece heated to change the surface mechanical properties of the Grinding Balls heat treatment process. In order to heat only the surface of the workpiece without excessive heat transfer into the interior of the workpiece, the heat source used must have a high energy density, that is, in the Grinding Balls unit area of the workpiece to give greater heat to the workpiece surface or part of a short time Or instantaneous reach high temperature. The main methods of surface heat treatment are flame quenching and induction heating heat treatment. Commonly used heat sources such as oxygen, acetylene or propane flame, induction current, laser and electron beam.
Chemical heat treatment is a Grinding Balls heat treatment process that changes the chemical composition, organization and properties of the workpieces. The difference between chemical heat treatment and surface heat treatment is that the latter changes the chemical composition of the workpiece surface. Chemical heat treatment is the workpiece on carbon, nitrogen or other alloy elements in the medium (gas, liquid, solid) heating, insulation for a long time, so that the workpiece surface infiltration of carbon, nitrogen, boron and chromium and other elements. After infiltration of elements, Grinding Balls heat treatment processes such as quenching and tempering are sometimes performed. The main chemical heat treatment carburizing, nitriding, seepage Grinding Balls.