Device and method for preventing roll marks of quenched thick steel plate
A technology of thick steel plate and roll marks, which is applied in the field of devices for preventing roll marks of quenched thick steel plates, can solve the problems of roll marks on the contact surface of thick steel plates, achieve the effect of good plate shape, simple method, and avoid indentation
Inactive Publication Date: 2021-08-24
安徽首矿大昌金属材料有限公司
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Problems solved by technology
[0008] The purpose of the present invention is to provide a device and method for preventing roll marks on quenched thick steel plates, so as to solve the problem that roll marks easily appear on the contact surface of thick steel plates in the prior art when thick steel plates are processed in a heat treatment quenching furnace
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[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0030] Such as figure 1 As shown, the present invention is a device for preventing roll marks on quenched thick steel plates, which is used for thick steel plates 4 after shot blasting and before entering the heat treatment quenching furnace. The device of the present invention comprises a planar frame structure, and the planar frame structure includes a pair of long frame sides 1 extending along the front-to-back direction, a pair of wide frame sides 2 extending along the left-right direction, and a middle frame side 3 extending along the left-right direction. The long frame side 1, the wide frame side 2 and the middle frame side 3 are all made of strip steel. Wherein, the width of the strip steel made into the long frame side 1 and the wide frame side 2 is the same, which is 30 mm in this embodiment; and the width of the strip steel made into the mid...
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Abstract
The invention discloses a device and method for preventing roll marks of a quenched thick steel plate. The device comprises a plane frame structure, each frame edge in the plane frame structure is made of strip steel, and the plane frame structure is supported on the contact surface of the thick steel plate and is welded and fixed. The method comprises the steps that firstly, the thick steel plate and the plane frame structure are integrally overturned in an upside-down manner, then the thick steel plate and the plane frame structure are fed into a heat treatment quenching furnace, the plane frame structure makes contact with a furnace bottom roller, and quenching treatment of the thick steel plate is completed through the heat treatment quenching furnace. According to the device and method, through the plane frame structure, the thick steel plate does not make contact with the furnace bottom roller in the furnace, the possibility that the thick steel plate generates roll marks in the furnace is avoided, the quenching effect is not affected, and the performance and the yield are not affected.
Description
technical field [0001] The invention relates to the field of steel plate quenching treatment technology, in particular to a device and method for preventing roll marks on quenched thick steel plates. Background technique [0002] Roll printing is a serious quality problem that has plagued roller hearth heat treatment quenching furnaces for a long time. Many steel plate manufacturers have made arduous attempts to solve this problem. Nodules often occur on the surface of furnace hearth rolls during production, resulting in roll marks on the lower surface of thick steel plates, requiring large-scale grinding, or even scrapping, especially when producing certain thick steel plates that require quenching and tempering treatment. The roll marks are caused by nodules on the roll surface, and secondly, the indentation caused by the extra-thick steel plate is heavy and the yield strength is low at high temperature. [0003] "Analysis and countermeasures of nodules on the surface of ...
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IPC IPC(8): C21D1/667C21D9/00C21D1/18C21D6/00
CPCC21D1/667C21D9/0081C21D9/0025C21D9/0018C21D9/0062C21D1/18C21D6/00
Inventor 杨云清李勇曹发卫王建兵陈利涛马磊霍刚田坤禾刘国庆
Owner 安徽首矿大昌金属材料有限公司