Process hydraulic valve block

Process hydraulic valve block
(1) pre-treatment process: materials processing manifold block must ensure that the internal organization of dense, not a sandwich, trachoma and other defects, prior to processing to deal with the rough inspection. Cast iron block and large block of steel processing should be carried out before the aging treatment and pretreatment.
(2) material: Usually on every side allowance of at least 2mm or more.
(3) Shape milling: Milling valve block six sides, each side stay 0.2-0.4mm margin.
(4) roughing: Roughing valve block six sides, each side stay 0.05-0.08mm refining capacity, to ensure that two pairs of parallel to the surface of less than 0.03mm, two adjacent vertical surface is less than 0.05mm.
(5) crossed: according to pattern scribe, punching the center hole (conditions can be done directly with the center drill in CNC drilling machine).
(6) Drilling: Drill the holes, surface finish roughness ra = 12.5μm. Require tapping, tapping can.
(7) tunnel boring and milling: for each well bore need be boring and milling machining.