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第三节 生产工艺流程及经济技术指标
    一、钨丝(杆)生产工艺流程:
    工艺特点:
    添加硅、铝、钾型添加剂,以保证钨丝的耐高温特性;采用两次氢气还原,控制氢气流量的露点;旋锻—拉伸总加工道次约100道,以煤气(粗丝)和电热(细丝)方式加热钨丝。拉伸加工最小直径为ф0.015mm,超细钨丝(ф0.01mm)则采用电化学方式制造。
    二、钼丝(杆)生产工艺流程:
    工艺特点:采用与钨加工相似的规范加工。
    三、历年生产经济指标见(表4-10)
    钨钼丝历年经济技术指标
    表4-7
    指标名称
    年份197819791980198119821983198419851986198719881989
    绕
    丝
    性
    能合
    格
    率
    (%)小计75.2762.4487.6186.4781.7788.3988.5494.0494.4893.4895.5495.07
    15w67.7958.0687.9683.7374.3686.7686.5694.2694.1092.1294.7589.68
    25w89.6167.9787.1189.5388.9289.8792.2796.7896.9694.5693.5794.01
    1000w69.5491.4390.1610088.5182.5589.2697.2297.7899.50
    优化总成品率(%)85.3988.1984.8583.9186.5388.0488.6088.3788.2288.44
    还原总成品率(%)77.2175.1576.7877.9778.1978.3078.4578.2878.3278.08
    压坯总成品率(%)98.1998.8497.6797.8997.8697.8997.8397.7498.0998.06
    熔结总成品率(%)95.7196.6596.9698.0398.3697.8797.8598.2097.8498.64
    精冶总成品率(%)65.2967.5767.1861.7062.7865.3266.0666.4566.3666.2366.33
    钨粗丝总成品率(%)69.4384.5170.0566.3669.5074.3983.2782.1574.3976.2275.5875.61
    钨细丝总成品率(%)76.0368.8061.6954.4656.6857.5568.9476.4974.5875.1078.6774.78
    钼粗丝总成品率(%)77.5571.2085.6982.4579.8778.5582.4682.6782.72
    钼细丝总成品率(%)76.9978.6680.7887.8381.8382.7984.0189.9273.81
    万米钨钼丝耗新横(只/万米)1485746.369.18124361748614691688999
    万米钨钼丝单位电耗(千瓦时)154682522413445408447429387
    说明:1、1977年前因计算方法不一,无可比性;
    2、本表数据由计调处提供。