The reasons for insufficient hardness of forgings caused by improper post forging heat treatment process are:

Quenching temperature is too low;

Quenching heating time is too short;

Tempering temperature is too high;

Severe decarburization of forging surface caused by repeated heating;

Unqualified chemical composition of steel, etc.

Forging the reasons for the high hardness of forgings caused by improper post forging heat treatment process are as follows:

Cooling too fast after normalizing;

Normalizing or tempering heating time is too short;

Unqualified chemical composition of steel, etc.

Uneven hardness of Forgings: the main reason for uneven hardness caused by forging is improper heat treatment process, such as excessive one-time charging or too short holding time; Or partial decarburization of forgings caused by heating.

Cooperate with Yida forging company for your next project.

Many companies prefer to buy forgings products from China. But you may find that few Chinese manufacturers can provide the expected high-quality forging products. Yida is a leading forging company in China, with internal molds in the company. In order to provide customers with high-quality products, we are equipped with a large number of advanced production equipment (up to 2500 tons) and sufficient quality testing instruments (hardness tester, Spectrograph and CMM etc).

We have passed ISO 9001:2008 and ISO/TS16949 quality system certification. In 2017, we obtained the latest IATF16949:2016 quality system certification.

We start supplying OEM quality forging parts to the World Top 500 Company in 2021 year.