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一、前言图1所示,为医用安瓿玻管连续式吹塑拉管机用整体高温合金吹管,材料为高温合金 GH37。过去,由于该吹管φ16毫米特深通孔(长径比达137.5)加工问题未能突破,成都制药一厂一直采用高温合金与45钢对焊管(长度约各半)。吹管连续工作温度为1000℃左右,对焊管使用15～20天就从焊缝处断裂。每次要停产修复2～3天,损失上万元。因此,该吹管成为影响正常生产的一大关键。
First, the preamble Figure 1 shows, for the medical ampoule glass tube continuous blow molding machine with a high temperature alloy blow pipe, the material is high temperature alloy GH37. In the past, due to the blow pipe φ16 mm special deep through-hole (aspect ratio up to 137.5) processing problems failed to break, Chengdu Pharmaceutical Factory has been using high-temperature alloy and 45 steel butt welded pipe (about half the length). Purge pipe continuous working temperature of about 1000 ℃, the use of welded pipe 15 to 20 days from the weld fracture. Each time to stop the repair 2 to 3 days, the loss of tens of thousands. Therefore, the blow pipe has become a key impact on normal production.