滑动轴承的钨金瓦衬是由巴氏合金(锡基或铅基)浇铸而成,其工艺过程如下: 一、准备工作 1、清洗瓦衬:先酸洗或碱洗,后用热水清洗,尤其对燕尾槽和沟槽部位要用钢丝刷刷洗干净。如果是旧瓦重新浇铸,则应先整体加热,焙脱钨金衬层。 2、车削好木质或金属芯棒。芯棒直径比轴瓦所装配的轴颈小5～10mm,芯棒长度比轴瓦长40～50mm, 3、准备有适当容量的勺子,以便浇铸钨金。勺子容量应多于一次浇钨金量。将勺子预热到200℃左右。 4、挂锡溶液的配制:将氯化铵和氯化锌按体积比2∶1或重量各半混和,混和物放入60～70℃热水中,饱和溶解,得到混和物的饱和溶液,可作为挂锡溶液。 5、选配钨金:通常选用Б_(83)号高锡(锡基)巴氏合金,或选用Б_(16)号低锡(铅基)巴氏合金。当轴颈大于160mm,宜采用Б_(83)号钨金浇 Sliding bearing of tungsten gold lining is made of Babbitt (tin or lead-based) casting, the process is as follows: First, the preparatory work 1, Wash tile lining: first pickling or alkali wash, then wash with hot water , Especially for the dovetail groove and groove parts should be scrubbed with a wire brush. If the old tile is re-cast, it should be the overall heating, stripping tungsten lining. 2, turning good wood or metal mandrel. Mandrel diameter smaller than the journal fitted shaft 5 ~ 10mm, mandrel length than the bearing length 40 ~ 50mm, 3, prepare a suitable capacity spoon, in order to cast tungsten gold. Spoon capacity should be more than once poured tungsten content. Preheat the spoon to about 200 ° C. 4, the preparation of tin solution: The ammonium chloride and zinc chloride by volume ratio of 2: 1 or by weight of the mixture, the mixture was placed 60 ~ 70 ℃ hot water, saturated and dissolved to obtain a saturated solution of the mixture, Tin can be used as a solution. 5, optional tungsten: usually choose Б_ (83) high-tin (tin-based) Babbitt, or use Б_ (16) low tin (lead-based) Babbitt. When the journal is larger than 160mm, should adopt Б_ (83) tungsten pouring