Method for making internal control standard sample

A production method and standard sample technology, applied in the field of metallurgy, can solve the problems of unfavorable pre-furnace composition precise control, ineffective guidance, poor sample uniformity, etc., and achieve the effects of saving manpower and material resources, convenient material collection, and uniform heating

Inactive Publication Date: 2015-11-18
BEIJING SHOUGANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the cumbersome processes of smelting, billet casting, forging and finishing, the existing manufacturing process of internal control standard samples for pre-furnace inspection has the problems of cumbersome manufacturing steps and a long manufacturing cycle
[0003] In the field of industrial manufacturing, the control requirements for the smelting components of some electrical steels, automobile plates, and pipeline steels are relatively high. The uniformity of the internal control standard samples used for general furnace inspection is poor, and segregation is prone to occur, which is not conducive to the precise control of the components before the furnace. Unable to efficiently guide the actual production inspection work

Method used

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  • Method for making internal control standard sample
  • Method for making internal control standard sample
  • Method for making internal control standard sample

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Select seven small cylindrical cast iron samples with similar composition after desulfurization in front of the furnace as the sample raw material, remove the oxide skin on the surface of the sample raw material, and make it into a remelted material.

[0057] Select 458g of remelting material and place it in the remelting container, add 0.02g of zirconium pieces into the remelting container, and place the remelting container in the remelting equipment.

[0058] Vacuumize the remelting equipment. Specifically include: first step, connect the inner cavity of the remelting equipment with high-purity argon gas; the purity of the argon gas is 99.9996%, and the pressure of the argon gas is controlled at 0.1 MPa. The second step is to connect the inner cavity of the remelting equipment to the vacuum pump, and use the vacuum pump to vacuum the inside of the remelting equipment twice, and stop when the vacuum degree of the inner cavity of the remelting equipment is greater than ...

Embodiment 2

[0066] Select five racquet-shaped steel samples produced in front of the furnace with similar components as the sample raw materials, remove the oxide skin on the surface of the sample raw materials, and make remelted materials.

[0067] Select 435g of remelting material and place it in the remelting container, add 0.1g of zirconium sheet into the remelting container, and place the remelting container in the remelting equipment.

[0068] Vacuumize the remelting equipment. Specifically include: first step, connect the inner cavity of the remelting equipment with high-purity argon gas; the purity of the argon gas is 99.9996%, and the pressure of the argon gas is controlled at 0.1 MPa. The second step is to connect the inner cavity of the remelting equipment to the vacuum pump, and use the vacuum pump to vacuum the inside of the remelting equipment for 4 times, and stop when the vacuum degree of the inner cavity of the remelting equipment is greater than or equal to -850mbar.

...

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Abstract

The invention relates to a field of metallurgy technology, especially relates to a method for making an internal control standard sample, and the method comprises the following steps: selecting sample raw materials and making into a remelting material; selecting remelting materials and placing into a remelting container; placing the remelting container into a remelting equipment; heating the remelting materials to a fusion state; casting the mixed metal in fusion state into a die by a centrifugal casting mode, after the mixed metal in the die is molded into a sample, fetching the sample; detecting the uniformity of the sample, and obtaining the final internal control standard sample. According to the invention, uniformity of the internal control standard sample is improved by means of remelting and centrifugal casting, thereby preventing segregation problem of the internal control standard sample.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a method for preparing an internal control standard sample. Background technique [0002] At present, in the field of metallurgy, internal control standard samples for furnace inspection are generally produced through the technological process of smelting, billet casting, forging and finishing. Due to the cumbersome technological processes of smelting, billet casting, forging and finishing, the existing manufacturing process of internal control standard samples for pre-furnace inspection has the problems of cumbersome manufacturing steps and a long manufacturing cycle. [0003] In the field of industrial manufacturing, the control requirements for the smelting components of some electrical steels, automobile plates, and pipeline steels are relatively high. The uniformity of the internal control standard samples used for general furnace inspection is poor, and segregation is pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
Inventor 杜士毅费书梅王涛金伟焦丽王程徐佳崔全法
Owner BEIJING SHOUGANG CO LTD
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