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Preparation method and equipment capable of improving manufacturing qualification rate of claws and connecting rods

A pass rate and connecting rod technology, applied in welding equipment, manufacturing tools, metal processing equipment, etc., can solve the problems of difficult oxyacetylene surfacing, low final pass rate of surfacing layer, narrow control range of surfacing layer hardness, etc. , to achieve the effect of benefiting the quality of the surfacing layer and reducing internal defects

Pending Publication Date: 2022-03-11
喻杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small aperture of the prefabricated hole, the oxyacetylene surfacing operation is very difficult. At the same time, due to the high requirements for flaw detection of the claw wear-resistant surfacing layer and the narrow control range of the hardness of the surfacing layer, the surfacing layer is damaged. The final yield is very low, which has become a well-known process technology bottleneck in the CRDM manufacturing industry

Method used

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  • Preparation method and equipment capable of improving manufacturing qualification rate of claws and connecting rods
  • Preparation method and equipment capable of improving manufacturing qualification rate of claws and connecting rods
  • Preparation method and equipment capable of improving manufacturing qualification rate of claws and connecting rods

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Such as image 3 Shown, a kind of preparation equipment that can improve hook claw, connecting rod manufacturing pass rate, described preparation equipment comprises the surfacing box 1 that is box structure, and the top of described surfacing box 1 is also provided with as surfacing box 1 open opening 2;

[0067] It also includes a mounting frame 4 arranged in the surfacing box 1, the mounting frame 4 is provided with an installation station for installing the filling rod, and at the installation station, the filling rod can rotate around its own axis;

[0068] The opening 2 is used as an operation channel for welding the surfacing layer on the filler rod;

[0069] It also includes a gas source pipe 6 whose outlet end is located in the surfacing box 1 .

[0070] In the prior art, for the preparation of claws and connecting rods, a common method is to obtain a wear-resistant layer on the base material by surfacing welding. Selection of the base material: the material...

Embodiment 2

[0077] This embodiment is further limited on the basis of Embodiment 1. Since the required filling mandrel is strip-shaped, in order to make the shape of the surfacing box 1 and the opening 2 more suitable for installation as a filling rod, it is convenient to pass the surfacing gun along the filling rod. The axis moves to obtain a surfacing layer extending along the axial direction of the filling rod, which is set as follows: the surfacing box 1 is strip-shaped, the opening 2 is arranged on the top plate of the surfacing box 1, and the opening 2 is a length The extension direction is along the strip shape along the length direction of the overlay welding box 1 .

[0078] In order to realize such as automatic surfacing torch movement and specific wire feeding position matching adjustment, it is set as follows: it also includes a walking trolley 3 that can reciprocate along the length direction of the opening 2, and the walking trolley 3 is provided with an The fixed position o...

Embodiment 3

[0086] This embodiment is further limited on the basis of Example 1. This embodiment also discloses a preparation method that can improve the production yield of hooks and connecting rods. The preparation method is as follows: Drill a prefabricated hole on the part, then weld the filling mandrel in the prefabricated hole, and then carry out hole processing on the filling mandrel to obtain a wear-resistant layer of the hole wall on the part, and the filling mandrel adopts any one of the above provided The manufacturing equipment is based on the filling rod as the filling mandrel matrix, and the filling mandrel is obtained by surfacing the surfacing layer for the oxyacetylene flame of the carbonization flame, and the specific method is as follows:

[0087] Install the filling rod on the installation frame 4, and inject anti-oxidation protective gas into the surfacing box 1 through the gas source pipe 6;

[0088] Using the opening 2 as a surfacing operation channel, the surfacing...

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Abstract

The invention discloses a preparation method and equipment capable of improving the manufacturing qualification rate of claws and connecting rods, and belongs to the technical field of control rod driving mechanism parts. The preparation equipment comprises a surfacing box of a box structure, and the upper portion of the surfacing box is further provided with an opening serving as an opening of the surfacing box; the mounting rack is arranged in the surfacing welding box, a mounting station for mounting the filling rod is arranged on the mounting rack, and the filling rod can rotate around the axis of the filling rod on the mounting station; the opening is used as an operation channel for surfacing a surfacing layer on the filling rod; the outlet end of the gas source pipe is positioned in the surfacing box. The preparation method is based on the preparation equipment. By adopting the preparation equipment and the preparation method provided by the scheme to complete preparation of the claw and the connecting rod, the product manufacturing qualification rate can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of manufacturing parts of a control rod driving mechanism of a nuclear power plant, in particular to a preparation method and equipment capable of improving the qualified rate of claws and connecting rods. Background technique [0002] Reactor Control Rod Drive Mechanism (CRDM) is one of the key equipment in nuclear power plants. Its principle can be: by controlling the regular changes of the electromagnetic field to drive the claw parts to produce corresponding actions, thereby driving the drive rod parts and then driving the control rod components in the reactor The core moves up and down to realize a series of important functions such as starting and stopping the reactor, adjusting or maintaining the core power during normal operation and rapid shutdown under accident conditions. [0003] For the CRDM used in nuclear power plants including claws in active service, each set contains two sets of claws, uppe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K5/18B23K5/22B23P15/00
CPCB23K5/18B23K5/22B23P15/00
Inventor 喻杰
Owner 喻杰
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