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: 2012-08-08
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 plate and wrought iron plate that meet the national standards or use technical requirements. The thickness ratio of the carbon steel plate and wrought iron plate 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 carbon steel plate and wrought iron plate must reach 100%, so that there is no air between the joint surfaces; then the joint length around the joint surface 95% of them are welded and fixed to make blanks;

[0020] 3) Heating the above-mentioned billet to 990°C in the furnace and keeping it for 20 minutes to make the internal and external temperature of the billet reach 1 to 1, then enter the hot rolling mill for rolling according to the requirements, and perform stress-reli...

Embodiment 2

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

[0023] 2) Stack a carbon steel plate between two layers of wrought iron plates. 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, and then the joints around the joint surface Carry out 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 internal and external temperature of the billet reaches 1 to 1, and the...

Embodiment 3

[0026] Material selection: a layer of wrought iron plate sandwiched between two layers of alloy steel plates, other conditions are the same as 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, drawing performance, hardness, toughness and other advantages, composite steel is applied to various fields of industry and civil use, such as construction, chemical machinery, storage and transportation, electric power, etc. At present, composite steel manufactured in China is roughly Divided into: traditional forging method, explosive forming method and casting composite method. The traditional forging method is to heat the two steels to a certain temperature, forge them with a pressure hammer to make them into 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 gas and ash, and secondary heating is required during rolling, which is...

Claims

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Application Information

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