Blast cleaning

All components hardened in RENK’s hardening shop are typically blast cleaned. This step is carried out using a manually operated and a semi-automatic glad bead blasting system, two rotary-disk impeller blasting machines, and a blasting cabinet for very large components. Glass beads and hardened steel balls are used as the blasting media. Compressed air or impellers are used to accelerate the blasting medium against the material undergoing blasting, which cleans and compresses the component’s surface. Following blasting, the heat treated material is free of residues such as insulating pastes, scale, oil, and soot.

Blast cleaning with steel balls also introduces substantial residual stress in the component surface, which is accompanied by hardening of the surface. This leads to a measurable increase in hardness and, in the case of toothed parts in particular, to a noticeable increase in the strength of tooth flanks and tooth roots.

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Hardening shop

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

Quenching

Heat treatment consists of raising the austenitizing temperature followed by quenching that is appropriate for the material and the required properties.

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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

Areas of expertise

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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Areas of expertise

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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