Eng chhiatna nge valve castings-ah hian a awm awlsam?

1. A stomata (stomata) te

Hei hi gas atanga siam cavity te tak te a ni a, chu chu metal solidification process chu metal chhungah a chhuak lo. A chhung lam bang hi a hrual a, gas a awm a, hei hian ultrasonic wave-ah reflectivity sang tak a nei a, mahse a bul berah chuan spherical emaw ellipsoid emaw a nih avangin point defect a ni a, hei hian a reflection amplitude a nghawng a ni. Ingot chhunga air hole chu forging emaw rolling emaw hnuah area defect-ah a flattened a, hei hi ultrasonic inspection hmanga hmuh a hlawkthlak hle.

2. Retraction leh loose hole

Casting emaw ingot emaw chu a lum a, a solidified chuan a volume chu a tlahniam tur a ni a, hollow defect chu liquid metal hmanga tihpun theih a ni lo. Vovities lian leh concentrated te chu shrinkage holes an ti a, void te tak te leh scattered void te chu loose an ti bawk. Thermal expansion leh cold contraction dan avang hian shrinkage hole hi a awm ngei ang, mahse processing method hrang hrang hmangin a pianzia, a lian leh a awmna hmun hrang hrang a awm a, casting emaw ingot body thlenga a inzar pharh chuan a chhiatna a lo ni ta a ni. Ingot hian shrinkage hole chu a cut fai a, forging parts-ah a hruai lut lo a nih chuan residual shrinkage hole (residual shrinkage hole, residual shrinkage pipe) a lo ni ang.

3. Clip slag tih a ni

Smelting process-a slag emaw, furnace body-a refractory emaw chu liquid metal-ah a peel chhuak a, a leih hunah casting emaw steel ingot-ah a hruai lut a, slag clamp defect a siam a ni. Slag hi a tlangpuiin a awm mai mai lo va, a tam zawk chu dense state-ah emaw, depth hrang hrangah a darh zau emaw a, volume defect nen a inang a, mahse linearity engemaw zat a nei fo thin.

4. Mixed a ni

Smelting process-a reaction products (oxide, sulfide, etc. ang chi) -non-metallic inclusions, emaw metal component-a component thenkhat dah belh chu a hmin vek lo va, metal inclusions siam turin a awm reng a, chu chu high density, high melting point components-tungsten, molybdenum, etc. te hi a ni.

5. Thumal dang sawi dan

Casting emaw ingot-a segregation tih hian a kawk ber chu smelting process emaw, metal melting process-a component hrang hrangte insem darh dan inang lo atanga lo awm component segregation a ni. Segregation awmna hmuna mechanical property chu metal matrix pumpui mechanical property nen a danglam a, allowable standard range aia danglamna chu defect a lo ni ta a ni.

6. Casting crack (Crack) te

Casting-a crack hi a chhan ber chu metal cooling solidification-a shrinkage stress hian material chakna tawp ber a pelh vang a ni a, chu chu casting design leh casting process pianzia nen a inzawm a, chubakah metal material-a bawlhhlawh thenkhat (sulphur content sang, cold brittleness, phosphorus content sang, etc.) cracking sensitivity nen pawh a inzawm bawk. Spindle-ah pawh shaft crystal-ah pawh crack a awm ang a, a hnu lama billet forging-ah chuan forging chhunga crack angin forging-ah a awm reng ang.

Chu bakah, Tianjin Tanggu Water Seal Valve Co., Ltd. hi technology lama hmasawn tak elastic seat valve puitu enterprise te a ni a, a thil siamte churubber seat wafer butterfly valve hmanga siam a ni, lug hnim hring valve, double flange concentric butterfly valve, double flange a awm bawkeccentric butterfly valve a ni, balance valve, .wafer dual plate check valve a ni, Y-Strainer leh a dangte. Tianjin Tanggu Water Seal Valve Co., Ltd. ah hian industry standard sang ber nena inmil first-class product kan pe thei hi kan chhuang hle. Valve leh fitting hrang hrang kan neih avangin i tui system atana solution tha ber kan pe thei ang tih i ring thei ang. Kan thil siam chungchang leh kan tanpui theih dan tur hriat duh chuan vawiin hian min rawn biak theih reng e.