Automotive flame retardant bellows are widely used in the automotive industry, and the production process of this bellows is more complex, including heat treatment, surface treatment, shaping process and stable treatment process.
If you want the flame retardant bellows to have good elastic properties, heat treatment is an indispensable process. Heat treatment of bellows can eliminate work hardening in the manufacturing process, restore the plasticity of flame retardant bellows, and strengthen the material to obtain elasticity. The heat treatment of bellows has its quality requirements both inside and outside. The internal requirement is to obtain certain microstructure, grain size and mechanical properties of the product after heat treatment; The external quality is mainly the surface oxidation degree after heat treatment.
Surface treatment of flame retardant bellows
Process treatment mainly includes oil removal, loose moving oxide and pickling processes, so that the surface of the flame retardant bellows product is smooth.
阻燃波纹管的热处理
想要阻燃波纹管拥有良好的弹性性能，热处理是不可或缺的工艺。波纹管热处理可以在制造工艺过程中消除加工硬化，恢复阻燃波纹管的塑性，同时能强化材料，获得弹性。波纹管热处理内外都有其质量要求。内在要求是热处理后使产品获得一定的组织状态、晶粒度和力学性能；外在质量主要是热处理后的表面氧化程度。
阻燃波纹管的表面处理
工艺处理主要包括除油、疏松动氧化皮和酸洗等工序，使阻燃波纹管产品表面光洁。
阻燃波纹管的整形工艺
波纹管成形后，因为弹性回弹，使得波纹管波距和波型都与吸计要求有差异，所以必须进行整形。对于加工硬化材料制成的阻燃波纹管，通才采用手工和机械整形法。对于以弥散硬化材料为原材料的阻燃波纹管，则通过装入时效夹具内，使波纹管定型，最终达到整形效果。
阻燃波纹管的稳定处理工艺
波纹管会在加工过程中产生内应力，使产品的弹性和几何尺寸不稳定。稳定处理的目的就在于消除应力，稳定性能和几何尺寸。波纹管的稳定处理包括热稳定处理工艺和机械稳定处理工艺。一般情况下只做热稳定处理，有特殊要求时才进行机械稳定处理。
