Quenching apparatus for hollow structural component and quenching method

A quenching device and component technology, applied in the direction of quenching devices, furnaces, furnace types, etc., can solve the problems of slow cooling, insufficient quenching, and difficult access of quenching liquid, so as to reduce the risk of deformation, suppress uneven cooling, The effect of full quenching

Inactive Publication Date: 2006-05-17
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when such a long hollow member is quenched, if the conventional press quenching is applied, there will be such problems that the internal cooling is slow and the quenching is insufficient; or the material softened by heating to the quenching temperature is The interior is hollow and long, so it is easy to break due to extrusion
However, for a hollow member whose cross-sectional shape has a complex shape such as an abnormal shape in the longitudinal direction, there is a disadvantage that it is necessary to design and manufacture a mold having a complicated shape. convex part
In addition, no matter how many convex parts are formed with the mold member, the quenching liquid sprayed from the ejection port of the concave part is difficult to reach the part facing the convex member, and the quenching may be insufficient.

Method used

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  • Quenching apparatus for hollow structural component and quenching method
  • Quenching apparatus for hollow structural component and quenching method
  • Quenching apparatus for hollow structural component and quenching method

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Embodiment Construction

[0022] (constitute)

[0023] A quenching device for a hollow member according to the present invention includes an end restraint jig, a contact jig, and a cooling device. The hollow member which is the target of the device of the present invention is a member whose interior is hollow. In addition, it is a cylindrical member with both ends opened. In particular, elongated members are likely to be skewed during quenching, so it is preferable to perform quenching with this device.

[0024] The end restraint jig is a member that restrains the both ends of the hollow member and suppresses the inflow of cooling fluid from the both ends. The end constraining jigs include a set of internal constraining jigs having outer shapes substantially corresponding to shapes of inner peripheries of both end portions of the hollow member. When the shapes of the inner peripheries of both ends are different, the outer shape of the internal restraint jig is also set to a shape corresponding to th...

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PUM

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Abstract

Provided is a quenching device that can reliably perform quenching with less uneven quenching and less deformation in a hollow member. It is characterized by comprising: an end having a set of internal restraint jigs 3 and a set of external restraint jigs 2 having external shapes approximately corresponding to the shapes of the inner peripheries of the respective ends of the cylindrical hollow member 1 that are open at both ends. part of the hollow member 1, thereby holding its contact jigs 4 and 5; inserting the internal restraint jig 3 into both ends of the heated hollow member and bringing the contact jigs 4 and 5 into contact A device that sprays coolant to cool the device while it is in a predetermined position. That is, by inserting the internal restraining jigs into both ends of the hollow member, cooling fluid is prevented from entering the hollow member, thereby suppressing uneven cooling, and at the same time suppressing occurrence of distortion by the end restraining jigs and contact jigs.

Description

technical field [0001] The present invention relates to a quenching device and a quenching method capable of performing high-quality quenching on a hollow member. Background technique [0002] Recently, for the weight reduction of automotive parts, hollow members are often used. For example, some people have begun to use hollow tubes as intermediate beam components to replace the previous members that processed steel plates into U-shaped cross-sections. [0003] However, when such a long hollow member is quenched, if the conventional press quenching is applied, there will be such problems that the internal cooling is slow and the quenching is insufficient; or the material softened by heating to the quenching temperature is The interior is hollow and long, so it is easy to break due to extrusion. [0004] Conventionally, Patent Document 1 is disclosed as a quenching device for elongated members. The device disclosed in Patent Document 1 is a constrained quenching device ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/08C21D1/62
Inventor 岸本笃典坂上秀幸上野行一金井则之
Owner TOYOTA JIDOSHA KK
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