An integral casting bucket

Abstract

The invention relates to an integral casting bucket and a manufacturing method thereof. An integral casting bucket, including lifting lugs, a top plate, two side plates and a bottom plate connected to the two side plates. A cast steel for casting the bucket, the composition is as follows: C: 0.1%-0.6%; Si: 0.2%-0.6%; Mn: 0.5%-1.8%; Cr: 0.5%-1.6%; Ni: 0.2%~0.75%; Mo: 0.1%~0.6%; P≤0.035%, S≤0.035%, the balance is iron. The method for manufacturing the integral excavator bucket by using the cast steel: put the cast steel components into the smelting furnace for smelting, and then carry out pre-furnace metamorphism treatment, manufacture models and templates, film coating, heating, vacuuming, placing sand Boxing, sanding, molding, boxing, pouring, quenching, tempering and cooling to room temperature to complete the casting of the bucket. The product of the invention has high strength, wear resistance, corrosion resistance, strong impact resistance and long service life.

Description

technical field [0001] The invention belongs to the field of engineering machinery, and in particular relates to an integral casting bucket and a manufacturing method thereof. Background technique [0002] Excavator buckets are generally made of cast iron. After being used for a period of time, the wear of the cast iron material is serious. When it is worn to the point where it cannot protect it, it needs to be replaced. When making buckets with high hardness alloy steel materials, although this kind of alloy steel material with high hardness has good wear resistance, its comprehensive mechanical properties are poor, and its high hardness makes it more brittle, and it is very easy to break when used. In addition, the existing excavator buckets are almost all assembled by welding process, which cannot be heat-treated, are not wear-resistant, and the welds are easy to break and have a short service life. [0003] The addition of rare earth elements is usually used to improve ...

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 problems such as cracking of the workpiece, quenching deformation, and soft spots; in addition, water-based quenching agents generally have problems such as insufficient anti-rust performance and insufficient cleaning ability, and are prone to oxide scales, and the amount of quenched workpieces is large, which greatly affects the processing technology and Productivity

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