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Water mist cooling method for normalizing treatment of large-scale casting and forging

A normalizing heat treatment and water mist cooling technology, applied in heat treatment furnaces, heat treatment equipment, furnace types, etc., can solve the problems of low atomization rate, large operation cost, large equipment investment, etc., and achieve the effect of uniform water volume and uniform cooling

Active Publication Date: 2014-03-19
MCC SFRE HEAVY IND EQUIP
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  • Abstract
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Problems solved by technology

[0004] The purpose of the present invention is to provide a water mist cooling method for normalizing heat treatment of large castings and forgings, which solves the problems of low atomization rate, high failure rate, large equipment investment and high operation cost in the prior art

Method used

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  • Water mist cooling method for normalizing treatment of large-scale casting and forging
  • Water mist cooling method for normalizing treatment of large-scale casting and forging
  • Water mist cooling method for normalizing treatment of large-scale casting and forging

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Embodiment Construction

[0014] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0015] refer to figure 1 , figure 2 , the present invention is a water mist cooling method for normalizing heat treatment of large castings and forgings. row), the inlet ports of multiple water inlet holes 10 of each atomizing nozzle 2 are connected to a water volume regulating valve 4, and the water volume regulating valve 4 of each horizontal row is connected with the cooling water pipe 3 of the horizontal row at the same time, and all cooling After the water pipe 3 merges, it is connected with the water outlet end of the water pipe main valve 7, and the water inlet end of the water pipe main valve 7 is connected with the cooling water source; the air inlet 9 of each atomizing nozzle 2 is provided with an air pressure regulating valve 5, and each horizontal row The air pressure regulating valve 5 is connected with the compressed air pipe...

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Abstract

The invention discloses a water mist cooling method for normalizing treatment of large-scale casting and forging, comprising the following steps of: determining a vertical and horizontal distance L of each atomization nozzle to be an injection distance from the atomization nozzle to a workpiece; determining an atomization area based on the size of the workpiece, and determining quantity of rows and lines of the atomization nozzle; determining the size and the structure of a steel framework, installing the required atomization nozzle on the steel framework, connecting each water amount regulating valve with a cooling water pipe, and communicating a main valve of the water pipe with a cooling water source; simultaneously connecting each air pressure regulating valve with a compressed air pipe, and communicating the compressed air main valve with a high pressure air source, to finish. The method can reach a purpose for cooling the workpiece by atomizing and spraying water under action of the compressed air jet; and has advantages of simple structure, reliable operation and low cost maintenance.

Description

technical field [0001] The invention belongs to the technical field of heat treatment cooling, and relates to a water mist cooling method for normalizing heat treatment of large castings and forgings. Background technique [0002] In the production process of large-scale equipment manufacturing, normalizing treatment is often required. The purpose of normalizing steel is to refine grains, uniform carbides, and improve mechanical properties. However, for large castings and forgings, due to the large cross-sectional size and slow cooling rate in the air, resulting in coarse grains after cooling, the effect of normalizing treatment is often poor, and the effect of normalizing heat treatment process is difficult to achieve. [0003] In the actual production process, most manufacturers choose water vapor atomizing axial flow fans, which consist of multiple water vapor atomizing fans to form a cooling unit, and then form a water mist cooling system with electrical and water supply...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/28C21D9/00C21D6/00
Inventor 程琪赵万利
Owner MCC SFRE HEAVY IND EQUIP
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