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Fork-lift truck steering knuckle cast steel material and preparation method thereof

A technology of cast steel and forklift trucks is applied in the field of cast steel materials for forklift steering knuckles and their preparation, which can solve the problems that forklift trucks are widely used in different environments, and achieve the effects of high initial hardness, high yield strength, high impact toughness and strength.

Inactive Publication Date: 2013-12-25
ANHUI HECHENG MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The load-bearing parts used in forklifts are mostly made of cast steel. Due to the great difference in the operating environment of forklifts, different material mechanics technical requirements such as temperature, strength, toughness, and wear resistance have been put forward for cast steel for forklift parts. Steel does not yet meet these requirements

Method used

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Embodiment Construction

[0010] A cast steel material for a forklift steering knuckle, which contains the following elemental components in weight percent: carbon 0.15-0.35, silicon 1.2-1.4, manganese 4.2-4.5, phosphorus 0.01-0.03, sulfur 0.015-0.04, chromium 3.2-3.5, copper 0.1-0.3, Vanadium 1.2-1.4, Molybdenum 0.4-0.6, Tungsten 2.5-2.7, Ni0.3-0.4, As0.2-0.3, Hf0.6-0.8, Bi0.1-0.15, Be0.26-0.36, Pb0 .23-0.29, the balance is iron.

[0011] The preparation method of the cast steel material for the steering knuckle of the forklift comprises the following steps:

[0012] (1) Mix scrap steel and pig iron at a weight ratio of 1:1.2 for smelting and slag removal treatment. The melting temperature is 1550°C-1610°C. Then, add other elements into the ingredients, smelt and slag discharge, detect the alloy composition and adjust to Compliance, refining, casting;

[0013] (2) Heat treatment of the casting: the casting is heated at a rate of 110-130°C / hour to 420-445°C, kept for 4-5 hours, and cooled to room tem...

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Abstract

The invention relates to a fork-lift truck steering knuckle cast steel material and a preparation method thereof. The fork-lift truck steering knuckle cast steel material contains, by weight, 0.15-0.35% of carbon, 1.2-1.4% of silicon, 4.2-4.5% of manganese, 0.01-0.03% of phosphorus, 0.015-0.04% of sulfur, 3.2-3.5% of chromium, 0.1-0.3% of cooper, 1.2-1.4% of vanadium, 0.4-0.6% of molybdenum, 2.5-2.7% of tungsten, 0.3-0.4% of Ni, 0.2-0.3% of As, 0.6-0.8% of Hf, 0.1-0.15% of Bi, 0.26-0.36% of Be, 0.23-0.29% of Pb, and the balance of iron. The cast steel material has characteristics of wear resistance, high impact toughness, high strength, high cast initial hardness, high yield strength, and deformation fracture resistance.

Description

technical field [0001] The invention belongs to the technical field of metallurgical casting, in particular to a cast steel material for a forklift steering knuckle and a preparation method thereof. Background technique [0002] Forklifts are widely used in ports, stations, airports, freight yards, factory workshops, warehouses, distribution centers, and distribution centers, etc., and can enter cabins, carriages, and containers for loading, unloading, and handling of palletized goods. Essential equipment. Forklifts play a very important role in the logistics system of enterprises and are the main force in material handling equipment. Widely used in various sectors of the national economy such as stations, ports, airports, factories, warehouses, etc. The load-bearing parts used in forklifts are mostly made of cast steel. Due to the great difference in the operating environment of forklifts, different material mechanics technical requirements such as temperature, strength, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/60C22C33/04C21D6/00
Inventor 吕青堂陈栋李文宇
Owner ANHUI HECHENG MACHINERY
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