Quenching

Heat treatment consists of raising the austenitizing temperature followed by quenching (hardening) that is appropriate for the material and the required properties. Depending on the composition of the steel, the austenitizing temperatures range between 800 °C and 900 °C. Hardening is followed by a further heat treatment process known as tempering, which takes place in separate systems. If tempering is carried out at over 350 °C, this is referred to as heat treatment rather than hardening and tempering. The goal of heat treatment is to create a homogeneous structure with increased strength and high ductility.

If the mechanical properties of a heat treated component are not sufficient to meet the requirements placed on the component, a second, typically thermochemical, heat treatment such as case hardening or nitriding follows between the mechanical pre-processing and the finishing process.

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Case hardening

Hardening refers to the sub-process in which the material being treated is quenched in oil or under gas following carburization.

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Hardening shop

Annealing

Annealing processes are intensive heat treatments. The goal is to obtain specific material properties that are suitable for subsequent processing steps.

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Hardening shop

Blasting

Blast cleaning results in a measurable increase in the strength of the tooth flanks and tooth root, as well as increased hardness of the toothed parts.

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Hardening shop

Material testing

Whether you're selecting materials, designing workpieces, or assessing damage – our experts are here to provide you advice and support.

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Relevant areas of expertise

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Surface coating

RENK has many years of in-depth experience in the area of surface coatings for gear unit parts and drive components which are subject to exceptional conditions.

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Gear technology

Optimized design and production of gears at RENK. Ideal operating characteristics and a high degree of reliability.

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Areas of expertise

Heat treatment

Heat treatment from RENK. Thorough and reliable heat treatment for gear unit parts and drive components.

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