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Corrosion Prevention for Workpieces After Heat Treatment: Construction of a Full-Process Anti-Rust System

2026-02-28

Corrosion Prevention for Workpieces After Heat Treatment: Construction of a Full-Process Anti-Rust System

Surface corrosion of workpieces after heat treatment damages surface integrity, increases subsequent processing costs, and may even result in workpiece scrap in severe cases. Especially under working conditions with humid environments or water-containing cooling media, the corrosion incidence can exceed 30%. The main causes include residual cooling medium, untimely drying of workpieces, excessive humidity in storage environments, and damaged surface oxide films.

The full-process anti-rust solutions are as follows:

Optimize the post-cooling treatment process. Immediately place workpieces into a cleaning tank after cooling, perform ultrasonic cleaning for 15–20 minutes with an alkaline cleaning agent (pH 10–12) to remove impurities such as residual quenching oil and salt bath on the surface, and then thoroughly dry them in a drying oven (holding at 120–150 ℃ for 30 minutes).
Implement surface anti-rust treatment and select anti-rust methods according to the storage period:
- Short-term storage (within 1 month): spray anti-rust oil (oil film thickness ≥ 5 μm);
- Long-term storage: wrap with vapor-phase anti-rust paper or vacuum packaging, with built-in desiccants to control humidity.
Control the storage and transportation environment. Maintain the humidity of the storage workshop below 50% and the temperature at 15–25 ℃. Use anti-rust pallets for stacking workpieces to avoid direct contact with the ground. Use waterproof and dustproof covers during transportation to prevent erosion by rainwater and dust.

कमरा 13A07, 14वीं मंजिल, टाइशी होल्डिंग टॉवर, नंबर 471, शिनहुआ रोड, जियांगहान जिला, वुहान शहर, हुबेई प्रांत, चीन। E-mail: hbeikyn@163.com Tel: 18971549433 Tel: 18971549433

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Corrosion Prevention for Workpieces After Heat Treatment: Construction of a Full-Process Anti-Rust System

Corrosion Prevention for Workpieces After Heat Treatment: Construction of a Full-Process Anti-Rust System