Noticias

1. Metallographic structure of martensitic wear-resistant ductile iron Martensite Martensite is the main matrix structure, generally high-carbon hidden needle martensite. Under the metallographic...

When using lost foam casting to produce steel castings, surface carbonization of castings has always been a controversial topic. When using EPS pattern materials, low carbon steel (such as ZG25)...

1. Chemical composition factors Influence of carbon content: If the carbon content is too high, greater thermal stress and structural stress will be generated during the solidification process of the...

What is the purpose of carburizing low-carbon steel castings? Improve surface hardness and wear resistance Low-carbon steel castings have low carbon content, insufficient surface hardness and wear...

For the sand sticking problem of clutch shell casting in the workshop, the possible causes of the problem were analyzed according to the production situation of the workshop. The cause-effect diagram...

Coated sand is generally composed of aggregate, binder, curing agent, lubricant and special additives. 1. Aggregate Aggregate is the main component of coated sand. The requirements for aggregate are:...

Carbon steel castings Changes in mechanical properties: Tempering can eliminate quenching internal stress, reduce hardness and strength, and improve toughness and plasticity. For example, high carbon...

Vermicular graphite cast iron has excellent performance such as high wear resistance, shock absorption and superior comprehensive heat fatigue resistance, and has been widely used in production. There...

In lost foam products, common defects mainly include sand inclusion and slag inclusion defects. To solve sand and slag inclusion defects, we must first systematically and comprehensively analyze the...