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High-strength cast steel material for forklift fork clamp and preparation method thereof

A high-strength, fork-clamp technology, applied in the field of metallurgical casting, can solve problems such as the large difference in the use environment of forklifts, and achieve the effects of high initial hardness, high impact toughness, and high yield strength

Inactive Publication Date: 2016-03-30
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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] A high-strength cast steel material for forklift fork clamps, which contains the following elements by weight percentage: C0.15-0.36, Si1.5-1.7, P0.02-0.04, S0.01-0.025, Mn1.2-1.4 , Cr8.0-8.3, Mo1.2-1.4, Mg3.1-3.2, Gd0.24-0.28, Dy0.5-0.6, La1.2-1.4, Yb0.2-0.3, Ga0.5-0.7, Be1 .5-1.7, the balance is iron.

[0011] A method for preparing a high-strength cast steel material for forklift fork clamps includes the following steps:

[0012] (1). Mix scrap steel and pig iron at a weight ratio of 1:1.2 for smelting and slag removal. The smelting temperature is 1510°C-1570°C. Then, other elements are added to the ingredients, smelt and slag, and the alloy composition is detected and adjusted to Meet the requirements, refining, casting;

[0013] (2) Heat treatment of the casting: the casting is heated at a rate of 120-130°C / hour to 720-740°C, holding for 2-3 hours, and then at a rate of 95-115°C / hour to 910-950°C, holding 4- 5 hours; then cool down to 640-680°C at a rate of 150-170°C / h...

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Abstract

The invention discloses a high-strength cast steel material for a fork chuck of a forklift and a preparation method of the high-strength cast steel material. The cast steel material comprises the following element ingredients in percentages by weight: 0.15-0.36% of C, 1.5-1.7% of Si, 0.02-0.04% of P, 0.01-0.025% of S, 1.2-1.4% of Mn, 8.0-8.3% of Cr, 1.2-1.4% of Mo, 3.1-3.2% of Mg, 0.24-0.28% of Gd, 0.5-0.6% of Dy, 1.2-1.4% of La, 0.2-0.3% of Yb, 0.5-0.7% of Ga, 1.5-1.7% of Be and the balance of Fe. The cast steel disclosed by the invention not only can meet high strength, but also is relatively high in impact toughness; and a cast piece is high in initial hardness, has the characteristics of high yield strength and hard deformation and fracture, is suitable for manufacturing the fork chuck of the forklift, and can not fracture.

Description

Technical field [0001] The invention belongs to the technical field of metallurgical casting, in particular to a high-strength cast steel material for forklift fork clamps and a preparation method thereof. Background technique [0002] Forklifts are widely used in ports, stations, airports, freight yards, factory workshops, warehouses, circulation centers and distribution centers, etc., and can enter cabins, carriages and containers for loading and unloading and handling of palletized goods. It is a must in pallet transportation and container transportation. Indispensable equipment. Forklifts play a very important role in the company's logistics system and are the main force in material handling equipment. It is 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 use environment of forklifts, different mater...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/34C22C38/22C22C33/06C21D9/00
Inventor 吕青堂陈栋李文宇
Owner ANHUI HECHENG MACHINERY