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苏联基辅医药器械设计局研究了鎢镍镀层在压铸A12铝合金时对压型鑲块耐熱性的影响。在生产试验过程中,对鑲块工作表面定期(每生产5000件)进行目视檢验,发现用电镀过的鑲块在不预修情况下压铸了50万件,沒有发现型腔表面产生烧蚀裂纹和热裂,而氰化的压型鑲块在压铸31万件后即由于出现烧蚀裂纹而报废。压型鑲块材料为4Х4М2ВФС纲,经淬火回火后硬度为HRC35。鎢镍镀层厚度为9微米,电镀是在下列电解液中进行的:鎢酸钠100克/升,硫酸镍15克/升,乙二酸銨45克/升。电镀规范如下:阴极电流密度为5安/分
Soviet Kiev Medical Device Design Bureau studied the tungsten-nickel coating die-casting A12 aluminum alloy pressure-type inserts heat resistance. During the production test, the working surface of the insert was periodically inspected (5000 pieces per production) for visual inspection. It was found that 500,000 pieces were cast without plating on the plated inserts, and no burning was found on the surface of the cavity Cracks and hot cracking, and cyanide pressure-type inserts in the casting of 310,000 due to ablation cracks and scrapped. Pressure-type inserts for the material 4Х4М2ВФС Gang, the hardness after quenching and tempering HRC35. The thickness of the tungsten-nickel plating was 9 microns and the plating was carried out in the following electrolytes: 100 grams of sodium tungstate, 15 grams of nickel sulfate, and 45 grams of ammonium oxalate. Plating specifications are as follows: Cathode current density of 5 A / min