一种GH4169合金管材的酸洗液和酸洗方法
By using a pickling solution composed of sodium fluorosilicate, calcium fluorosilicate, sodium nitrate, and zeolite powder, GH4169 alloy pipes are pickled at high temperatures, solving the problems of high risk and low efficiency in existing high-temperature alloy pickling processes, and achieving safe and efficient removal of oxide layers.
CN116904994BActive Publication Date: 2026-07-17NORTHWESTERN POLYTECHNICAL UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-07-18
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing high-temperature alloy pickling processes use strong acids, which pose problems such as high risk, complex operation, and low efficiency.
Method used
A pickling solution composed of sodium fluorosilicate, calcium fluorosilicate, sodium nitrate, and zeolite powder is used for pickling at 90–100°C, which shortens the pickling time.
Benefits of technology
It achieves low-risk, simple operation and efficient pickling effect, removes the oxide layer on the surface of GH4169 alloy pipes and shortens the pickling time.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN116904994B_ABST
Abstract
本发明提供了一种GH4169合金管材的酸洗液和酸洗方法，涉及高温合金领域。所述酸洗液包括以下质量百分含量的组分：氟硅酸钠7％、氟硅酸钙0.5％、硝酸钠0.4％和沸石粉0.8％。本发明的酸洗液和酸洗方法，所使用的酸洗液酸性不强，危险系数较低，且操作简单方便，不需要复杂的操作设备和繁琐的操作流程，所需时间很短，大大提高了酸洗的效率。
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Citation Information
Patent Citations
Method for pickling metallic surface, pickling solutions therefor, and process for regenerating spent pickling solutions
US20010008141A1