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    steel shovel town

    • 發(fā)布人:管理員

    • 分類:news center

    • 標(biāo)簽:444

    • 編碼:601

    • 時(shí)間:2021.01.11.10:37

    信息詳情:

    luannan county takes the transformation and upgrading, innovation and development as the main line to make the traditional characteristic industry bigger and stronger. through the transformation of mode and structure, it constantly innovates the reform ideas and measures, builds the steel shovel town with high quality, focuses on promoting the high-quality development of the steel shovel industry, and drives the traditional characteristic industry to radiate new vitality. recently, the provincial development and reform commission announced the list of the first batch of characteristic towns in hebei province (jite town lianban [2017] no. 1). luannan county, china steel shovel town on the list of cultivation category.

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    標(biāo)題:quality of steel spade

    時(shí)間:2021.01.11.10:36
    簡(jiǎn)介: as a kind of common metal products, steel spade is widely used in agriculture, construction and other industries. the quality of steel spade depends on the production process and heat treatment process of steel spade. the heat treatment process of steel includes annealing, normalizing, quenching and tempering and surface heat treatment. tempering includes high temperature tempering, medium temperature tempering and low temperature tempering. tempering is to reheat the quenched steel to a certain temperature and then cool it by a certain method. its purpose is to eliminate the internal stress produced by quenching, reduce the hardness and brittleness, so as to achieve the expected mechanical properties.

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    時(shí)間:2021.01.11.10:35
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