Preparation method of cast steel perforator top tip with high-temperature resistance and corrosion resistance

A technology of piercing machine and high temperature resistance, which is applied in metal rolling, manufacturing tools, metal rolling, etc. It can solve the problems of restricting the development of seamless steel pipes and failing to effectively improve the service life of piercing plugs, so as to improve the performance of plugs, The effect of simplifying the production process and improving the quality of molten steel

Inactive Publication Date: 2013-12-18
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned plugs have not effectively improved the service life of the per

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013]The cast steel plug is smelted in a 1000 kg medium frequency induction furnace, and the specific process is as follows:

[0014] First smelt the cast steel plug material in the electric furnace, its chemical composition and mass fraction are: 0.19%C, 1.78%Cr, 0.09%N, 0.86%Mo, 0.57%Si, 0.59%Mn, 1.37%Ni, 0.027%S, 0.031%P, the balance is Fe. When the temperature of the above-mentioned molten metal reaches 1652°C, the molten steel comes out of the furnace and enters the ladle. After all the molten steel enters the ladle, the diameter The alloy wire enters the ladle through the wire feeder. The mass fraction of the alloy wire added is 2.5% of the total mass of molten steel in the ladle. The chemical composition and mass fraction of the alloy wire are: 6.16%Ca, 7.83%Ba, 3.15%Ce, 1.94% Mg, 15.26% Fe, 3.20% Ti, 7.88% V, 12.01% Si, the balance is Al and unavoidable trace impurities. When the temperature of the molten steel drops to 1494°C, the molten steel is poured into the m...

Embodiment 2

[0016] The cast steel plug is smelted in a 1000 kg medium frequency induction furnace, and the specific process is as follows:

[0017] First smelt the cast steel plug material in the electric furnace, its chemical composition and mass fraction are: 0.28%C, 1.56%Cr, 0.12%N, 1.14%Mo, 0.78%Si, 0.36%Mn, 1.18%Ni, 0.028%S, 0.035%P, the balance is Fe. When the temperature of the above-mentioned molten metal reaches 1679°C, the molten steel comes out of the furnace and enters the ladle. After all the molten steel enters the ladle, the diameter The alloy wire enters the ladle through the wire feeder. The mass fraction of the alloy wire added is 3.5% of the total mass of molten steel in the ladle. The chemical composition and mass fraction of the alloy wire are: 7.05%Ca, 6.90%Ba, 4.07%Ce, 1.82% Mg, 16.59% Fe, 3.96% Ti, 6.72% V, 14.02% Si, the balance is Al and unavoidable trace impurities. When the temperature of the molten steel drops to 1509°C, the molten steel is poured into the ...

Embodiment 3

[0019] The cast steel plug is smelted in a 1000 kg medium frequency induction furnace, and the specific process is as follows:

[0020] First smelt the cast steel plug material in the electric furnace, its chemical composition and mass fraction are: 0.24%C, 1.70%Cr, 0.09%N, 0.98%Mo, 0.64%Si, 0.47%Mn, 1.26%Ni, 0.025%S, 0.034% P, the balance is Fe. When the temperature of the above-mentioned molten metal reaches 1668°C, the molten steel comes out of the furnace and enters the ladle. After all the molten steel enters the ladle, the diameter The alloy wire enters the ladle through the wire feeder. The mass fraction of the alloy wire added is 3.0% of the total mass of molten steel in the ladle. The chemical composition and mass fraction of the alloy wire are: 7.92%Ca, 6.04%Ba, 4.85%Ce, 1.53% Mg, 17.87% Fe, 4.95% Ti, 5.02% V, 14.91% Si, the balance is Al and unavoidable trace impurities. When the temperature of the molten steel drops to 1497°C, the molten steel is poured into the...

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PUM

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Abstract

The invention discloses a preparation method of a cast steel perforator top tip with high-temperature resistance and corrosion resistance. The preparation method is characterized by comprising the steps of: firstly smelting a cast steel top tip material in an electric furnace, wherein the cast steel top tip material contains the following chemical components in percentage by weight: 0.18-0.28% of C, 1.55-1.80% of Cr, 0.08-0.12% of N, 0.85-1.15% of Mo, 0.55-0.80% of Si, 0.35-0.60% of Mn, 1.15-1.40% of Ni, less than 0.03% of S, less than 0.04% of P and the balance of Fe; when the temperature of molten metal reaches 1650-1680 DEG C, putting molten steel in a casting ladle; feeding alloy wires with diameter from phi3.5mm to 5.0mm into the casting ladle through a wire feeder; when the temperature of the molten steel is reduced to 1490-1515 DEG C, pouring the molten steel into a casting mould to obtain the top tip. The top tip has an excellent mechanical property and an excellent using effect.

Description

technical field [0001] The invention relates to a preparation method of a piercer plug, in particular to a preparation method of a high-temperature abrasion-resistant cast steel piercer plug, and belongs to the technical field of metal materials. Background technique [0002] The piercing machine head is one of the key tools with the largest consumption in the production of seamless steel pipes. The working conditions of piercing machine plugs in steel pipe production are quite harsh. During the piercing process, the plug is directly in contact with the high-temperature tube blank, and rotates counterclockwise with the tube blank. The plug is subjected to compressive stress, axial force, shear stress and surface friction, etc., and the working temperature is also high (the plug during final rolling Nasal temperature as high as 1100°C). Every time a steel pipe is worn, the plug generally needs to be quenched with water once before being worn again. It can be seen that the ...

Claims

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Application Information

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IPC IPC(8): C22C38/44B22D1/00C21D6/00B21B25/00
Inventor 高义民郑开宏张锦红符寒光邢建东皇志富马胜强
Owner BEIJING UNIV OF TECH
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