Integral casting digging bucket and manufacturing method thereof

A technology of integral casting and integral structure, applied in the direction of manufacturing tools, casting molding equipment, casting molds, etc., can solve the problems of insufficient cleaning ability, quenching deformation, workpiece cracking, etc., to improve convenience, improve wear resistance, increase The effect of friction

Active Publication Date: 2016-10-12
HUBEI WANXIN PRECISION CASTING & FORGING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The water-based quenching agent is characterized by a high cooling rate throughout the cooling process. In the high-temperature cooling stage, it can promote grain refinement and regular crystal shape, which is conducive to improving the performance of the workpiece. However, in the low-temperature stage, too high cooling rate is easy to Lead to problem

Method used

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  • Integral casting digging bucket and manufacturing method thereof
  • Integral casting digging bucket and manufacturing method thereof
  • Integral casting digging bucket and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0078] Example 1

[0079] An integral casting bucket includes lifting lugs 1, a top plate, two side plates 3, and a bottom plate 4 connected by two side plates 3. The lifting lugs 1, the top plate, the two side plates 3 and the bottom plate 4 form an integral structure.

[0080] The side plate 3 is provided with a side tooth plate 8, and the connecting part of the lifting ear 1 and the top plate is provided with lifting ear reinforcement ribs 2.

[0081] A plurality of wear-resistant blocks 5 and wear-resistant balls 6 are arranged in the area of ​​the side plate 3 close to the front 7 of the bucket, and the wear-resistant blocks 5 are close to the junction of the side plate 3 and the bottom plate 4.

[0082] The bottom plate 4 is provided with two longitudinal ribs 9 close to the two side plates 3, and a plurality of transverse ribs 10 are provided in the middle of the bottom plate 4.

[0083] The overall structure of the integral casting bucket includes lifting lugs 1, lifting lug rei...

Example Embodiment

[0084] Example 2

[0085] A cast steel used for casting the bucket, the composition of the cast steel is as follows:

[0086] C: 0.1% to 0.6%; Si: 0.2% to 0.6%; Mn: 0.5% to 1.8%; Cr: 0.5% to 1.6%; Ni: 0.2% to 0.75%; Mo: 0.1% to 0.6%; P≤ 0.035%, S≤0.035%, the balance is iron.

Example Embodiment

[0087] Example 3

[0088] A cast steel used for casting the bucket, the composition of the cast steel is as follows:

[0089] C: 0.3%; Si: 0.3%; Mn: 1.8%; Cr: 1.6%; Ni: 0.55%; Mo: 0.3%; P: 0.025%, S: 0.015%, and the balance is iron.

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Abstract

The invention belongs to the field of engineering machinery, and particularly relates to an integral casting digging bucket and a manufacturing method thereof. The integral casting digging bucket comprises a lifting lug, a top plate, two side plates and a bottom plate connected with the two side plates, and the lifting lug, the top plate, the two side plates and the bottom plate are integrated. Cast steel for casting the digging bucket comprises the following components: 0.1%-0.6% of C, 0.2%-0.6% of Si, 0.5%-1.8% of Mn, 0.5%-1.6% of Cr, 0.2%-0.75% of Ni, 0.1%-0.6% of Mo, less than or equal to 0.035% of P, less than or equal to 0.035% of S, and the balance of iron. The method for manufacturing the integral digging bucket of an excavator by using the cast steel comprises the following steps: smelting the components of the cast steel in a smelting furnace; and after smelting is finished, carrying out modification treatment in front of a furnace, manufacturing models and mould plates, coating, heating, vacuumizing, placing a sandbox, adding sand, modeling, carrying out mould assembling, pouring, quenching, and tempering and cooling to the normal temperature to finish casting of the digging bucket. A vacuum sealing technology and a low alloy steel material are adopted, the integral casting digging bucket is formed by one-time pouring, and the product is high in strength, high in wear resistance, corrosion resistance and impact force resistance and long in service life.

Description

Technical field [0001] The invention belongs to the field of engineering machinery, and particularly relates to an integral casting bucket and a manufacturing method thereof. Background technique [0002] Excavator buckets are generally made of cast iron. After a period of use, the wear of cast iron materials is more serious. When they are worn out to protect them, they need to be replaced. If you use higher hardness and high content alloy steel When making buckets, although this kind of higher hardness alloy steel material has better wear resistance, its comprehensive mechanical properties are poor. The higher hardness causes its brittleness and is extremely easy to break when used. In addition, the existing excavator buckets are almost all assembled by welding technology, cannot be heat-treated, are not wear-resistant, and the welds are easily broken and have a short service life. [0003] Rare earth elements are usually used to improve the wear resistance of steel, which has a ...

Claims

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Application Information

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IPC IPC(8): B22C9/22C21D1/18C21D9/00C22C38/02C22C38/04C22C38/08C22C38/12C22C38/18E02F9/00E02F9/28E02F3/40
CPCB22C9/22C21D1/18C21D9/0068C22C38/02C22C38/04C22C38/08C22C38/12C22C38/18E02F3/40E02F3/401E02F9/00E02F9/2883B22C9/03B22D18/06B22D27/20C21D1/06C21D1/56C21D1/773C21D6/004C21D6/005C21D6/008C22C38/002C22C38/44C22C38/58C23C8/02C23C8/32
Inventor 万继文
Owner HUBEI WANXIN PRECISION CASTING & FORGING INC
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