Continuous staged or isothermal quenching cooling apparatus
A technology of cooling equipment and isothermal quenching, applied in quenching devices, heat treatment equipment, manufacturing tools, etc., can solve the problems of reducing the cooling intensity of the medium, maintaining the isothermal temperature, reducing the stirring rate of the medium, etc. Effects of pollution and production safety issues
Inactive Publication Date: 2005-12-21
SHANGHAI JIAOTONG UNIV
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Problems solved by technology
[0003] The present invention aims at the time-controlled immersion quenching system (ITQS), when the temperature of the quenched part is close to the Ms point, the cooling strength of the medium is only reduced by reducing the stirring rate of the medium, and it cannot be kept isothermally at a temperature close to the Ms point like martensitic step-by-step quenching. In this case, a continuous grading or austempering cooling equipment is proposed to make the cooling intensity adjustable, and it has the characteristics of low production cost, no pollution, safe production process and unlimited size of quenched parts, suitable for batches with a single variety piece production
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[0010] Such as figure 1 As shown, the present invention mainly includes: immersion quenching tank 1, hot workpiece falling into cylinder 2, infrared thermometer 3, spray cooling conveyor belt 4, nozzle 5, isothermal furnace conveyor belt 6 and isothermal furnace 7, and their connection methods It is: the hot workpiece falls into the cylinder 2 and is inserted into the solution of the immersion quenching tank 1, the hot workpiece falls into the cylinder 2 and the upper mouth of the cylinder 2 is aligned with the discharge port of the heating furnace, and the lower mouth is aligned with the rapid cooling conveyor belt of the immersion quenching tank 1. 9 is the initial end position of the upper plane horizontal movement, the nozzle 5 is set around the spray cooling conveyor belt 4, and the initial end of the upper plane horizontal movement of the spray cooling conveyor belt 4 is set in the immersion quenching tank 1 to quickly lift the conveyor belt 11 Below the end of the upper mov...
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Continuous classification or austempering cooling equipment belongs to the field of heat treatment of metal materials. It mainly includes: immersion quenching tank, hot workpiece falling cylinder, infrared thermometer, spray cooling conveyor belt, nozzle, isothermal furnace conveyor belt and isothermal furnace, hot workpiece falling cylinder is inserted into the immersion quenching tank solution, heat The upper opening of the workpiece falling into the cylinder is aligned with the feeding opening of the heating furnace, and the lower opening is aligned with the initial position of the plane horizontal movement on the fast cooling conveyor belt. The initial end is set below the end of the moving plane on the rapid lifting conveyor belt of the immersion quenching tank, and the end is set above the initial end of the plane horizontal movement on the isothermal furnace conveyor belt. Most of the isothermal furnace conveyor belt is set in the heating chamber of the isothermal furnace. Infrared measurement The thermometer is arranged above the end of the moving plane on the fast-elevating conveyor belt and above the horizontal moving range of the plane on the spray-cooling conveyor belt. The invention has the characteristics of low cost, no pollution, safe production and unlimited size of quenched parts.
Description
Technical field [0001] The invention relates to a grading or austempering cooling device, in particular to a continuous grading or austempering cooling device, which belongs to the field of heat treatment of metal materials. Background technique [0002] Quenching refers to heating the steel to A C3 Or A C1 It is a heat treatment process of maintaining a certain temperature above the point for a certain period of time, and then cooling at an appropriate speed to obtain martensite and (or) bainite structure. In order to obtain the predetermined organization and performance, many conventional, special and combined cooling methods and equipment are used. The currently used classification / austempering methods mainly include martensite classification quenching and bainite austempering. Martensite graded quenching and bainite austempering mostly use nitrate as the quenching medium (Martensite graded quenching can also use graded quenching oil as the quenching medium). The advantage of ...
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IPC IPC(8): C21D1/20C21D1/62
Inventor 潘健生陈乃录张伟民胡明娟
Owner SHANGHAI JIAOTONG UNIV