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A method for detecting the qualified permeability of cast-type wire rope joints

A detection method and wire rope technology, applied in measuring devices, instruments, etc., can solve problems such as lack of detection standards, achieve the effect of improving breaking force and ensuring product quality

Active Publication Date: 2020-03-17
湖南湘电动力有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method has no detection standard for how to judge whether the solder in the joint has been melted again, or whether the secondary heating temperature is too high to affect the strength of the wire rope.

Method used

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  • A method for detecting the qualified permeability of cast-type wire rope joints

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Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0019] With reference to the accompanying drawings, a qualified detection method for the permeability of a cast-type wire rope joint: it includes the following steps:

[0020] Step 1. Assemble the end of the wire rope 6 into the interior of the joint 3;

[0021] Step 2, wrapping the wire rope 6 at the bottom of the joint 3 with a heat insulating layer 5;

[0022] Step 3. Insert the detection steel wire 7 vertically from the center of the joint 3 to the bottom of the joint 3, pull the detection steel wire 7 upwards, and confirm that the detection steel wire 7 can be pulled out freely from the joint 3;

[0023] Step 4, preheating joint 3 and wire rope 6, the preheating temperature is 250°C;

[0024] Step 5, pour the solder 2 into the gap between the joint 3 and the steel wire rope 6;

[0025] Step 6: Heating the joint 3 and pulling the detect...

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Abstract

The invention relates to a method for detecting qualification of permeability of a pouring type steel wire rope joint. The method includes the following steps: 1, an end part of a steel wire rope is assembled into the joint; 2, the steel wire rope at the bottom of the joint is wrapped with a thermal insulation layer; 3, a detection steel wire is vertically inserted into the bottom of the joint from the center of the joint, the detection steel wire is pulled upwards, and it is determined that the detection steel wire can be freely pulled out from the joint; 4, the joint and the steel wire ropeare preheated; 5, brazing filler metal is poured into a gap between the joint and the steel wire rope; and 6, the joint is heated, the detection steel wire is pulled upwards, when it is detected thatthe steel wire is pulled out from the joint, heating is stopped immediately, and pouring is completed. The method provided by the invention reduces influence of heating as much as possible on intensity reduction of the steel wire rope caused by high temperature, ensures product quality of the rope joint after pouring, and improves breaking force of the rope joint.

Description

technical field [0001] The invention relates to a method for detecting the qualified permeability of a casting type steel cable joint. Background technique [0002] Casting type cable joint is to fix the end of steel wire and joint together by pouring solder. Since the casting type cable joint is poured at the installation site, it is not possible to carry out non-destructive testing such as X-ray; the current casting type cable joint The quality inspection is to check with the naked eye whether there is solder flowing out of the bottom of the cast body, or to machine the top of the cast joint. It is required that the number of pores on the machined surface should not exceed a certain number and size. [0003] In the pouring of some cable joints with large volume and mass, the preheating temperature should not be too high because the preheating temperature before pouring is too high, which will lead to the oxidation failure of the flux on the surface of the steel wire and th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D21/00
CPCG01D21/00
Inventor 李再华潘跃林江清波田家欣曾跃军
Owner 湖南湘电动力有限公司
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