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从前我們在工厂設計中,对鋼制工件在去銹后未上油漆前的防銹是考虑得比較少的,但是在工厂实际生产中,此問題对产品質量有一定影响。如造船厂中,在鋼板进行噴砂去銹后,大約要經过一个短時間才进行焊接与油漆。在这段時間內,一般是塗防銹油防銹的,但防銹油价格昂貴,对生产成本有一定影响,因此找一种能够在短期內防止鋼材生銹,并且价格低廉而对焊接質量又無影响的防銹剂,是迫切需要的。我們在設計某客車厂時,曾根据苏联專家建議,采用亞硝酸鈉作为短期防銹剂。但是我們对亞硝酸鈉防腐性能了解不够,而机車車輛管理局亦要求我局对此問題进行試驗,因此在青島
In the past we in the factory design, the rust on the steel parts before the rust is not considered after the paint is relatively small, but the actual production in the factory, the issue of product quality has a certain impact. For example, in a shipyard, welding and painting takes place after a short period of time after blasting the steel sheet to the surface. During this time, rust-proofing oil is generally applied, but the price of anti-rusting oil is expensive and has some impact on the production cost. Therefore, it is necessary to find a way to prevent steel from rusting in a short period of time, No effect of anti-rust agent, is urgently needed. When we designed a bus depot, we used sodium nitrite as a short-term anti-rust agent on the advice of Soviet experts. However, we do not know enough about the corrosion resistance of sodium nitrite, and the locomotive and rolling stock authority has also asked our bureau to test this issue. Therefore,