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发明公开
CN103480980A 一种低六价铬排放的309不锈钢药芯焊丝 失效 - 权利终止 转让

一种低六价铬排放的309不锈钢药芯焊丝
摘要：
一种低六价铬排放的309不锈钢药芯焊丝，它由药芯和外用钢带组成，所述药芯占焊丝总重量的15%-30%，其中药芯各组成占药芯重量的百分比为：金属铬粉：25-28%，金属镍粉：13-16%，电解金属锰4-8%，铝粉：1-4%，金红石：20-25%，石英:4-7%,锆英砂：3-6%，长石3-5%，MnO2：2-6%，冰晶石：1-2%，MFC添加剂：1-5%，余量为铁粉；MFC添加剂包括Zn：25-45%；Cu：5-15%；Si：2-10%；聚四氟乙烯：15-30%，氟化石墨：1-5%；Li2CO3：20-40%；机械混合后，需在电炉中加热至200-300℃搅拌均匀。本发明开发一种低六价铬（Cr+6）排放、焊接工艺优良的308不锈钢药芯焊丝。
摘要（英）：

A 309 stainless steel flux-cored wire low in hexavalent chromium discharge is composed of a flux core and an external steel strip. The flux core accounts for 15%-30% of the total weight of the flux-cored wire and comprises, by weight, 25-28% of metal chromium powder, 13-16% of metal nickel powder, 4-8% of electrolytic manganese metal, 1-4% of aluminum powder, 20-25% of rutile, 4-7% of quartz, 3-6% of zircon sand, 3-5% of feldspar, 2-6% of MnO2, 1-2% of cryolite, 1-5% of MFC additive, and the balance iron powder; the MFC additive comprises 25-45% of Zn, 5-15% of Cu, 2-10% of Si, 15-30% of polytetrafluoroethylene, 1-5% of carbon monofluoride and 20-40% of Li2CO3; and after mechanical mixing, the raw materials need to be heated to 200-300 DEG C in an electric furnace and evenly mixed. The 309 stainless steel flux-cored wire is low in hexavalent chromium (Cr+6) discharge and excellent in welding process.

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