Anchorage device clamping piece blank cold extrusion process

A cold extrusion and clamping technology, applied in the direction of structural elements, building components, building reinforcements, etc., can solve the problems of high clamping cost, low material utilization rate, large processing volume, etc., so as to improve the material utilization rate and reduce the The effect of machining volume and clip cost reduction

Inactive Publication Date: 2004-11-10
阚柳凤
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AI Technical Summary

Problems solved by technology

[0002] The prestressed anchor clip is the most numerous part in the prestressed anchor system, and it is also the part with the largest production volume of each prestressed anchor manufacturer. So far, each prestressed anchor manufacturer produces prestressed anchors The production process of the clamping piece generally adopts the method of cutting the round bar material with a band saw, and then machining and forming. This process has a large amount of machining, low material utilization rate, and high cost of the clamping piece.

Method used

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  • Anchorage device clamping piece blank cold extrusion process
  • Anchorage device clamping piece blank cold extrusion process

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Embodiment Construction

[0023] The present invention can be cold-extruded by one-time cold-extrusion forming process. If the pressure of the press is small, it can also be cold-extruded by secondary cold extrusion process.

[0024] 1. One-time cold extrusion molding process:

[0025] After selecting the round bar stock:

[0026] (1), blanking, if necessary, saw the round bar material into the required length;

[0027] (2), deburring, deburring as much as possible;

[0028] (3) Annealing, heat preservation at a furnace temperature of 550°C-850°C±20°C for no less than 1 hour, and cool with the furnace to below 500°C in air;

[0029] (4), phosphating saponification;

[0030] (5), forming, stamping forming with punch press.

[0031] In this embodiment, the material preparation is to use the round bar material 20GmnTi of Φ20-30 to prepare the material; when cutting the material, the length of the material is Φ26 (+0.4, -0.1) × 35.8 (+0.3, -0.3) The beating degree at both ends is not greater than 0.6,...

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Abstract

The invention is a cold-extruding technique of semifinished ground tackle clamp pieces, used in prestressed ground tackle systems. Its technical flow: raw material phi20-30 20GmnTi circular stick-cutting by belt saw---burring by a grinder---annealing (at furnace temperature of 550-850 deg.C plus or minus 20 deg.C for at least a hour, cooling under 500deg.C with the furnace and the making air cooling)--phosphatization and saponification--punch molding, and its advantage: because the shape of the semifinished clamp piece is similar to that of the finished clamp piece, it extremely enhances the utilization ratio of the clamp pieces, relatively reduces the mechanically processing quantity, too, thus able to reduce the cost of the clamp pieces by a large margin.

Description

technical field [0001] The invention relates to a cold extrusion process of an anchor clip blank used in a prestressed anchor system. Background technique [0002] The prestressed anchor clip is the most numerous part in the prestressed anchor system, and it is also the part with the largest production volume of each prestressed anchor manufacturer. So far, each prestressed anchor manufacturer produces prestressed anchors The production process of the clamping piece generally adopts the method of cutting the round bar material with a band saw and then machining it into shape. This process has a large amount of machining, low material utilization rate, and high cost of the clamping piece. Contents of the invention [0003] The object of the present invention is to provide a cold-extrusion process for anchor clip blanks that is similar in shape to the finished clips by cold extrusion and then machined. [0004] The solution ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C23/18E04C5/12
Inventor 白萍林
Owner 阚柳凤
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