Workpiece placing frame for low-temperature tempering furnace

Abstract

The invention discloses a workpiece placing frame of a low-temperature tempering furnace. The workpiece placing frame comprises a bottom plate, a connecting device and a placing plate; a tempering netis installed on the upper portion of the bottom plate, and a connecting device is arranged on the upper side of the bottom plate, the upper end of the connecting device is connected with a containingplate, and a containing groove is formed in the upper part of the bottom plate, and a rotating rod is movably connected to the interior of the containing groove, the other end of the rotating rod isrotationally connected with a connecting rod, and the other end of the connecting rod is connected with a fixing clamp, a connecting plate is arranged on the upper side of the bottom plate, and a connecting ring is rotationally connected to the upper side of the connecting plate, the placing frame can be used for placing the workpieces back and forth in a frame-by-frame mode., so that the workpiece is prevented from being overlapped in one piece, ventilation is not obstructed, and the uniformity of heat treatment is improved., workers do not need to operate manually after being placed into thetempering furnace, and scalding caused by staff during operation is avoided., so that the placing frame can be horizontally pushed into the tempering furnace to be used., can also be hoisted into oilor hot water for use, and is wide in application range.

Description

technical field [0001] The invention relates to the technical field of low-temperature tempering furnaces, in particular to a workpiece placing frame for low-temperature tempering furnaces. Background technique [0002] Low temperature tempering is also called "stress relief tempering". The tempering temperature range is 150-200 degrees Celsius. The structure after tempering is tempered martensite. Tempering is generally not used alone. Tempering is carried out after the parts are quenched. The main purpose is to eliminate the quenching stress and obtain the required structure. The tempering furnace is used for tempering heat treatment of general metal parts and mold products in the air. After heat treatment, the workpiece in the tempering furnace needs to be supported by a shelf. The support frame is easy to cause poor ventilation performance, resulting in uneven heating of the workpiece, resulting in poor heat treatment effect. In addition, when too many parts are put in, ...

AI Technical Summary

Problems solved by technology

[0002] Low temperature tempering is also called "stress relief tempering". The tempering temperature range is 150-200 degrees Celsius. The structure after tempering is tempered martensite. Tempering is generally not used alone. Tempering is carried out after the parts are quenched. The main purpose is to eliminate the quenching stress and obtain the required structure. The tempering furnace is used for tempering heat treatment of general metal parts and mold products in the air. After heat treatment, the workpiece in the tempering furnace needs to be supported by a shelf. The support frame is easy to cause poor ventilation performance, resulting in uneven heating of the workpiece, resulting in poor heat treatment effect. In addition, when too many parts are put in, the workpieces will overlap and pile up in one piece, which will affect the quality of workpiece processing

[0003] Chinese patent CN201721132552.3 discloses a workpiece placing rack for low-temperature tempering furnace. The workpiece is evenly spread, which improves the work efficiency and reduces the labor force. It has the advantages of simple structure, convenience and practicality. However, the bracket needs to be moved by the personnel to realize the shaking of the tempering net. It is tempered by oil boiling or hot water, the rack cannot be used for hoisting when oil boiling or hot water tempering

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