The invention discloses a
machining method for a
shower-type
injector adopting thin guide pipes. The
machining method comprises the following steps: (1)
machining components, specifically, machining an upper injection disc, a lower injection disc, a mouse cage and a plurality of the thin guide pipes, reserving gaps with a size of 0.03-0.8mm between upper connection holes of the thin guide pipes onthe upper injection disc and the thin guide pipes during
brazing, and arranging chamfers at the lower ends of the upper connection holes of the thin guide pipes; and meanwhile, reserving gaps with asize of 0.05-0.10mm between lower connection holes of the thin guide pipes on the lower injection disc and the thin guide pipes during
brazing; (2) cleaning; (3) assembling and filling
brazing fillermetal; (4) brazing, specifically, carrying out vacuum heating to reach 850-900 DEG C, and carrying out heat insulation for 30-60 minutes; then heating to reach 1030-1050 DEG C in 5 minutes, and carrying out heat insulation for 10-15 minutes; and then cooling to reach 600-700 DEG C, carrying out heat insulation for 1.5-2.5 hours and then cooling to reach
room temperature with the furnace; and (5) removing burrs. According to the machining method disclosed by the invention, the thin hole machining requirement is lowered, the machining requirement on a thin hole
machine is low, the whole assemblyis simple to operate, the working efficiency is high, the thin guide pipes of the
injector are high in consistency, and the product pass percent is high.