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Bimetal liquid-liquid composite packer and production method thereof

A manufacturing method and bimetal technology, applied in the field of ramming picks, can solve the problems of high production cost, short service life of ramming picks, etc., and achieve the effects of long service life, not easy to fall off, and good wear resistance.

Inactive Publication Date: 2010-05-12
山东恒森特种装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a bimetallic composite tamping pick and its manufacturing method, to effectively simplify the production process, improve the performance of the tamping pick, and solve the problems of short service life and high production cost of the existing tamping pick

Method used

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  • Bimetal liquid-liquid composite packer and production method thereof
  • Bimetal liquid-liquid composite packer and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] see figure 1 As shown, a bimetallic liquid-liquid composite pounding pick is composed of a pick body 1 and a pick palm 2. The upper end of the pick body 1 and the pick palm 2 accounts for 1 / 2 of the whole pick palm 1. The non-working surface part 21 is cast from 35CrMo alloy. Its carbon content is 0.3%. The lower end of the pick palm 2 accounts for 1 / 2 of the overall working surface part 22 of the pick palm 2. It is cast from a high-chromium-molybdenum-nickel-tungsten alloy melt. 25% chromium, 0.5% molybdenum, 1% nickel, 0.5% tungsten, 3.5% carbon, and the balance is iron. The working face part 22 of the pick palm is compounded on the non-working face part 21 of the pick palm.

[0027] The manufacturing method of the present embodiment is as follows:

[0028] Two smelting electric furnaces are used to smelt low-chromium ordinary steel and high-chromium-molybdenum-nickel-tungsten alloy respectively. First, pour the molten 35CrMo alloy with a temperature of 1660°C into...

Embodiment 2

[0030] see figure 1 As shown, a bimetallic liquid-liquid composite pounding pick is composed of a pick body 1 and a pick palm 2. The upper end of the pick body 1 and the pick palm 2 accounts for 2 / 3 of the whole pick palm 1. The non-working surface part 21 is cast from 35CrMo alloy. Its carbon content is 0.35%. The lower end of the pick palm 2 accounts for 1 / 3 of the overall working surface part 22 of the pick palm 2. It is cast from a high-chromium-molybdenum-nickel-tungsten alloy melt. 30% chromium, 1% molybdenum, 0.6% nickel, 1% tungsten, 3.8% carbon, and the balance is iron. The working face part 22 of the pick palm is compounded on the non-working face part 21 of the pick palm.

[0031] The manufacturing method of the present embodiment is as follows:

[0032] Two smelting electric furnaces are used to smelt low-chromium ordinary steel and high-chromium-molybdenum-nickel-tungsten alloy respectively. First, pour the molten 35CrMo alloy with a temperature of 1665°C into ...

Embodiment 3

[0034] see figure 1 As shown, a bimetallic liquid-liquid composite pounding pick is composed of a pick body 1 and a pick palm 2. The upper end of the pick body 1 and the pick palm 2 accounts for 3 / 5 of the whole pick palm 1. The non-working surface part 21 is made of No. 45 steel It is casted, and its carbon content is 0.42%. The lower end of the pick palm 2 accounts for 2 / 5 of the overall working surface part 22 of the pick palm 2. It is cast from a high-chromium-molybdenum-nickel-tungsten alloy melt. It contains 35% chromium, 1.5% molybdenum, 1.2% nickel, 1.6% tungsten, 4% carbon, and the balance is iron. The working face part 22 of the pick palm is compounded on the non-working face part 21 of the pick palm.

[0035] The manufacturing method of the present embodiment is as follows:

[0036] Two smelting electric furnaces are used to smelt low-chromium ordinary steel and high-chromium-molybdenum-nickel-tungsten alloy respectively. Firstly, the No. 45 molten steel with a t...

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Abstract

The invention relates to a bimetal liquid-liquid composite packer and a production method thereof. The body and the palm of the bimetal liquid-liquid composite packer are shaped with a bimetal liquid-liquid composite casting method; common low-chromium molten steel of which the temperature is 1660-1680 DEG C is cast and poured into a packer mould; after cooled to 1500-1550 DEG C, high-chromium Mo-Ni-W alloy melting liquid of which the temperature is 1560-1580 DEG C is added to be cooled and shaped to obtain the bimetal liquid-liquid composite packer. The working surface part and the non working surface part of the palm of the bimetal liquid-liquid composite packer form favourable metallurgical combination; combination is stable and has small possibility of dropping; the working surface of the palm of the bimetal liquid-liquid composite packer has high rigidity, favourable wear-resisting property and long service life. The invention has simple technology, low cost and favourable social and economic value and is suitable for popularizing and applying.

Description

technical field [0001] The invention relates to a tamping pick used by a railway maintenance tamping vehicle in the tamping operation, in particular to a bimetallic composite tamping pick and a manufacturing method thereof. Background technique [0002] The tamping pick is a consumable tool used on the tamping car, a large-scale maintenance machine for railway lines. It usually consists of a pick body and a pick palm located at the lower part of the pick body. Its function is to tamp and fasten the ballast in the track bed of the railway line to provide stable and solid support for the sleeper. [0003] At present, there are mainly two kinds of techniques for making tamping picks at home and abroad: one is to use alloy structural steel die forging or low carbon steel precision casting to form the tamping pick body, and then braze the hard alloy sheet on the vulnerable parts of the pick palm, and The other parts of the pickaxe palm are surfacing with wear-resistant materials...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D19/16C22C38/56C22C30/00E01B27/13
Inventor 张映霞孙岗
Owner 山东恒森特种装备有限公司
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