Manufacturing method of compound steel

A manufacturing method and composite steel technology, which is applied in the field of metal material manufacturing, can solve the problems of low accuracy of material combination size and steel ratio, easy oxidation of the composite interface, and difficulty in producing composite steel, so as to achieve high yield and good quality. Reprocessing performance and the effect of simple manufacturing process

Active Publication Date: 2011-01-19
杨自芬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the difference in melting point between the clad metal and the base steel, on the one hand, it is easy to cause melting loss at the joint part of the two metals during casting, and the composite interface is prone to oxidation; on the other hand, when the two metals are melted and recombined at high temperature, As a result, the carbon atoms in the high-carbon steel diffuse violently to the low-carbon steel, resulting in a decrease in the carbon content of the required steel. Secondly, the liquid-solid phase composite also has gas inclusions, dust inclusions, and poor reworkability at the composite interface. The material combination size and A series of problems such as low steel ratio accuracy and poor uniformity
Therefore, it is difficult to produce high-quality composite steel, and the manufacturing process of liquid-solid phase composite is relatively complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1) Level the carbon steel plates and wrought iron plates that meet national standards or use technical requirements. The thickness ratio of the carbon steel plates and wrought iron plates is matched according to the final product and rolling requirements. The joint surface of the wrought iron plate is deoxidized and decontaminated to make the joint surface smooth and smooth;

[0019] 2) Stack a layer of carbon steel plate and a layer of wrought iron plate, the contact area of ​​the joint surface of the carbon steel plate and the wrought iron plate must reach 100%, so that there is no air between the joint surfaces; 95% of it is welded and fixed to make a billet;

[0020] 3) The above-mentioned billet is heated to 990° C. in the furnace, and kept for 20 minutes, so that the temperature inside and outside the billet reaches 1 to 10° C. After entering the hot rolling mill and rolling as required, the stress relief annealing treatment is carried out according to the convent...

Embodiment 2

[0022] 1) Level the carbon steel plates and wrought iron plates that meet national standards or use technical requirements. The required thickness ratio of carbon steel plates and wrought iron plates is matched according to the final product and rolling requirements. The joint surface of the iron plate is deoxidized and decontaminated to make the joint surface smooth and smooth;

[0023] 2) Stack two layers of wrought iron plates with a layer of carbon steel plates sandwiched between them. The contact area of ​​the joint surface of the carbon steel plate and the wrought iron plate must reach 100%, so that there is no air between the joint surfaces. 100% fully enclosed welding and fixing to make blanks;

[0024] 3) the above-mentioned billet is heated to 950° C. in the furnace, and kept for 28 minutes, so that the temperature inside and outside the billet reaches 1 to 10°C, and then enters the hot rolling mill to carry out rolling as required, and then performs stress relief an...

Embodiment 3

[0026] Material selection: a layer of wrought iron plate is sandwiched between two layers of alloy steel plates, and other conditions are the same as those in Example 2.

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PUM

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Abstract

The invention provides a manufacturing method of compound steel, which comprises the following steps: leveling a steel plate and matrix steel, removing an oxide layer on the binding surface of the required steel plate and the matrix steel, and decontaminating so that the binding surface is smooth and flat; superposing the steel plate and the matrix steel, wherein the contact area of the binding surface of the required steel plate and the matrix steel reaches 100%, and no air exists on the binding surface; welding and fixing the transverse seams of the binding surface to obtain a blank; and heating the blank to 950-1000 DEG C in a furnace for 20-30 minutes so that the temperatures inside and outside the blank are uniform, rolling in a hot-rolling mill, and carrying out stress relief annealing by a conventional method, thereby obtaining the compound steel of the invention. The invention has the advantages of simple manufacturing technique, is easy to realize the industrial production and high yield, and enables the yield of compound steel to reach 100% due to the realization of non-oxidation manufacture in the compounding process.

Description

technical field [0001] The invention relates to a method for manufacturing composite steel, which belongs to the field of metal material manufacturing. Background technique [0002] Due to its good wear resistance, tensile properties, hardness, toughness and other advantages, clad steel is applied to various fields of industry and civil use, such as: construction, chemical machinery, storage and transportation, electric power, etc. At present, domestic manufacturing of clad steel is roughly Divided into: traditional forging method, explosive forming method and casting compound method. The traditional forging method is to heat the two steels to a certain temperature, forge them with a pressure hammer to make them one, and then roll them. In this method, because the temperature of the two steels and the forging time and times of the pressure hammer are not easy to grasp, the two steels contain air and a lot of ash, and secondary heating is required during rolling, which is ea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C37/02
Inventor 杨自芬
Owner 杨自芬
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