Grinding hi siamna kawngah valve sealing surface atana finishing hman tlanglawn tak a ni. Grinding hian valve sealing surface chu dimensional accuracy sang tak, geometric shape roughness leh surface roughness a neih tir thei a, mahse sealing surface surface inkara mutual position accuracy a ti tha thei lo. Ground valve sealing surface-a dimensional accuracy chu 0.001~0.003mm a ni tlangpui a; geometric shape dikna (unevenness ang chi) chu 0.001mm a ni a; a chunglam roughness chu 0.1~0.008 a ni.
Sealing surface grinding principle bulpui ber hian thil panga a huam a, chungte chu grinding process, grinding movement, grinding speed, grinding pressure leh grinding allowance te an ni.
1. 1. A rilru a hah lutuk chuan a rilru a buai em em a. Grinding tih dan tur
Grinding tool leh sealing ring chunglam chu a inzawm tha hle a, grinding tool hian joint surface-ah grinding movement complex tak tak a siam a ni. Abrasives hi lapping tool leh sealing ring chunglam inkar ah dah a ni. Lapping tool leh sealing ring chunglam chu a inzawm tlat chuan abrasive chhunga abrasive grain thenkhat chu lapping tool leh sealing ring chunglam inkarah a slide emaw a roll emaw ang. layer hmanga siam a ni. Sealing ring chunglama peaks te chu ground away hmasain, chutah chuan geometry mamawh chu zawi zawiin an thleng ta a ni.
Grinding hi metal-a abrasives hmanga mechanical process chauh ni lovin, chemical action a ni bawk. Abrasive chhunga grease hian a process tur surface-ah oxide film a siam thei a, chu chuan grinding process a ti chak thei a ni.
2 . grinding movement
Grinding tool leh sealing ring chunglam chu a inzawm tlat a, sealing ring chunglama point tinte chu grinding tool thlenga relative sliding path zawng zawng zatve chu a inang vek tur a ni. Tin, relative motion lam hawi pawh a danglam reng tur a ni. A kalna lam a inthlak reng chuan abrasive grain tinte chu sealing ring chung lamah anmahni trajectory an tih leh theih loh nan a veng a, chutiang chuan wear mark langsar tak a siam lo va, sealing ring chunglam chu a roughness a ti sang lo. Chu bakah, a kalna lam a inthlak chhunzawm zel chuan abrasive chu a insem darh zau thei lo va, chuvangin sealing ring chunglama metal chu a inthlau zawkin a cut thei bawk.
Grinding movement hi a buaithlak a, a kalna lam pawh nasa takin a danglam a, mahse grinding movement hi grinding tool bonding surface leh sealing ring surface-ah a kal zel a ni. Manual grinding emaw mechanical grinding emaw pawh nise, sealing ring surface-a geometric shape dikna chu grinding tool-a geometric shape dikna leh grinding movement-in a nghawng ber a ni.
3. grinding speed a ni
Grinding movement a chak poh leh grinding a efficient zawk thin. Grinding speed a rang a, unit time khatah workpiece chung lamah abrasive particle tam zawk a kal a, metal tam zawk a cut off bawk.
Grinding speed hi 10~240m/min a ni tlangpui. Grinding precision sang tak mamawh workpiece tan chuan grinding speed a tlangpuiin 30m/min aia tam a ni lo. Valve sealing surface grinding speed hi sealing surface a material nen a inzawm tlat a ni. Copper leh cast iron sealing surface grinding speed chu 10~45m/min a ni a; hardened steel leh hard alloy sealing surface chu 25~80m/min a ni a; austenitic stainless steel sealing surface chu 10~25m/min a ni.
4. grinding pressure a ni
Grinding pressure a san chuan grinding efficiency a sang chho zel a, grinding pressure pawh a sang lutuk tur a ni lo, a tlangpuiin 0.01-0.4MPa.
Cast iron, copper leh austenitic stainless steel sealing surface grinding hian grinding pressure chu 0.1~0.3MPa a ni a; hardened steel leh hard alloy sealing surface chu 0.15~0.4MPa a ni. Rough grinding atan value lian zawk la la, fine grinding atan value tlem zawk la rawh.
5. Grinding allowance pek a ni
Grinding hi finishing process a nih avangin a cut zat hi a tlem hle. Grinding allowance lian leh te hi a hmaa kan tih tawh machining dik leh surface roughness ah a innghat a ni. Process hmasa lama processing traces te chu paih chhuah a nih theih nan leh sealing ring-a geometric error siamthatna tur premise hnuaiah chuan grinding allowance a tlem chuan a tha zawk.
Sealing surface chu a tlangpuiin grinding hmain finely ground tur a ni. Fine grinding hnuah sealing surface chu direct-in lapped theih a ni a, grinding allowance tlem ber chu: diameter allowance chu 0.008~0.020mm a ni a; thlawhna allowance chu 0.006~0.015mm a ni. Manual grinding emaw material hardness a san chuan value tlem la la, mechanical grinding emaw material hardness a hniam chuan value lian tak la bawk ang che.
Valve body sealing surface hi ground leh process a awlsam loh avangin fine turning hman theih a ni. Finish turning hnuah sealing surface chu finishing hmain rough ground a ni tur a ni a, plane allowance chu 0.012~0.050mm a ni.
Tianjin tanggu water-seal valve Co.,ltd siamnaah specilized a nia ṭhut theihna tur butterfly valve, gate valve a ni, Y-strainer hmanga siam a ni, balancing valve a ni, wafer check valve a ni, adangte.
Post hun chhung: Jun-25-2023
