在試驗(yàn)機(jī)上對(duì)螺栓進(jìn)行試驗(yàn)有哪些需要注意?螺栓拉力試驗(yàn)是按GB3098.1-2000緊固件機(jī)械性能螺栓、螺釘和螺柱標(biāo)準(zhǔn)中規(guī)定。螺栓實(shí)施各種性能指標(biāo)的檢測(cè)。各種規(guī)格的螺栓按需要裝上試驗(yàn)工裝。樣件一端夾于試驗(yàn)機(jī)上鉗口,調(diào)整試驗(yàn)零點(diǎn),再調(diào)整下鉗口,夾持試件下端,這樣便可以進(jìn)行試驗(yàn)。一、夾持試件時(shí),應(yīng)按鉗口...
關(guān)注,蘊(yùn)含著巨大商機(jī)。 GB/T3098.1-2010《緊固件機(jī)械性能 螺栓、螺釘和螺柱》新標(biāo)準(zhǔn)的發(fā)布,強(qiáng)調(diào)對(duì)8.8級(jí)及以上產(chǎn)品的材料要求應(yīng)有足夠的淬透性,以確保緊固件螺紋截面的芯部在淬硬狀態(tài)、回火前獲得約90%的馬氏體組織。實(shí)際上對(duì)于8.8級(jí)螺紋直徑超過(guò)20mm的緊固件為保證良好的淬透性...
and the products英文20GB/T 3098.22-2009緊固件機(jī)械性能 細(xì)晶非調(diào)質(zhì)鋼螺栓、螺釘和螺柱Mechanical properties of fasteners made of the fine grain non-heat treatment steel — Bolts, screws...
and the products英文20GB/T 3098.22-2009緊固件機(jī)械性能 細(xì)晶非調(diào)質(zhì)鋼螺栓、螺釘和螺柱Mechanical properties of fasteners made of the fine grain non-heat treatment steel — Bolts, screws...
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