Multi-angle shot blasting descaling device for section steel

Abstract

The invention discloses a multi-angle shot blasting and descaling device for profile steel. The multi-angle shot blasting and descaling device comprises one to three sizing agent ejection and descaling mechanisms of the same structures, an air drying mechanism and a descaling sizing agent recycling mechanism. One to three sizing agent ejection and descaling mechanisms and the air drying mechanism are distributed and connected in sequence, the profile steel horizontally passes through one to three sizing agent ejection and descaling mechanisms and the air drying mechanism in sequence, and a descaling sizing agent recycling system is connected with the sizing agent ejection and descaling mechanisms. Each descaling room is provided with two sizing agent ejectors respectively and fixedly arranged below and above the profile steel, and sizing agent ejectors are arranged on the left side and the right side above the profile steel respectively and in each descaling room. Two flushing pipes are respectively arranged on the two sides of each descaling room of the sizing agent ejection and descaling mechanisms, the flushing pipes are arranged below and above the profile steel respectively, and one ends of the flushing pipes stretch into the descaling rooms. The device is efficient and environmentally friendly, saves energy, and is free of secondary pollution. Water and metal abrasives are used for achieving descaling of the surface of the profile steel, the descaling efficiency of the profile steel is improved, cost is lowered, and the environment cannot be polluted.

Description

Technical field [0001] The invention relates to a section steel descaling device, in particular to a section steel multi-angle shot blasting descaling device. Background technique [0002] Existing steel descale methods: [0003] 1. Tool descaling mainly uses steel wire brushes and other tools to polish the steel surface, which can remove loose or warped oxide scale, rust, welding slag, etc. Hand tool descaling can reach Sa2 level. However, the tool's low descaling efficiency cannot achieve product automation, and it is relatively harmful to the human body. [0004] 2. Pickling and descaling. Chemical pickling can remove oxide scale, rust and old coatings. Although chemical cleaning can make the surface reach a certain degree of cleanliness and roughness, pickling is prone to over-corrosion and hydrogen embrittlement, and acid mist is harmful to the human body and the environment. [0005] 3. Shot peening and descaling Shot peening is a method of removing metal rust by using compre...

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Problems solved by technology

However, the treatment of shot peening on section steel is easy to deform the workpiece, causing great environmental pollution, and can only be operated in a closed space.

[0006] 4. Slurry descaling. Although U.S. patents US7601226 and US6814815 describe the descaling of profiled steel and cleaning the profiled steel with a steel brush, the profiled steel after cleaning by this method will immediately return to rust in contact with air, which cannot be removed with a steel brush Traces of rework on the surface of section steel, and the fine particles on the surface cannot be completely removed with steel brush and normal pressure water

The surface of the produced section steel is relatively dirty

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