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最近对仪表设计提出的要求大大提高,例如在具有同样高的技术特性和可靠性时,需要缩小外形尺寸和金属用量。因此必须广泛采用具有高强度、耐腐蚀和非磁化的精密钢和合金。仪表制造业通常制造齿轮用的36НХТЮ弥散硬化合金就具有上述性质。由于被连接零件尺寸不能用机械紧固法,热敏元件靠近的位置(滚珠轴承)进行的焊接法(氩弧、微等离子体焊等),亦不能为连接轴齿轮采用(图1)。为此,作者采用激光焊接法克服上述困难。
Recent demands for instrumentation have increased dramatically, as the need for reduced form factor and metal usage, for example, with the same high technical characteristics and reliability. Therefore, it is necessary to widely adopt precision steels and alloys with high strength, corrosion resistance and non-magnetization. The 36НХТЮ dispersion hardened alloy, which is usually used in gear manufacturing in instrumentation, has the above properties. Since the size of the connected parts can not be mechanically fastened, the welding method (argon arc, micro plasma welding, etc.) performed at the position near the thermal element (ball bearing) can not be used for the connecting shaft gear (Figure 1). To this end, the author uses laser welding to overcome the above difficulties.