I. Pre-Operation Workload Survey .
1. Hmuh theiha enfiah .
Rail surface chu scale chhiatna, peeling, leh fat edges te chu mitin enfiah la, alloy steel frog joint te dinhmun pawh enfiah bawk ang che.
2. Touch .
Point rail-a working leh non-working edges, stock rail-a working edge, frog wing rail-a working edge leh frog heart rail te chu kut hlim takin khawih la, fat edge phenomenon a awm leh awm loh enfiah rawh.
3. Hmanraw tehna .
Point rail leh center rail-a reduction value tehna atan reduction ruler hmang la;
Fat edge thickness tehna atan steel ruler hmang la; Rail profile hriat nan profiler hmang rawh.
Rail joint-a a sag leh rel chunglam a inthlau loh dan enfiah turin steel straightedge leh feeler gauge hmang la. A chunga test data hmanga rel grinding plan siam tur chu teh rawh.
Grinding tih dan tur .
1. Hnathawktute inthenna .
Rail grinding team-ah hian mi 10 an awm a, a hnuaia tarlan ang hian hna hrang hrang an thawk a ni.
Mi pakhat chu Operation Leader hna a thawk a, pre-operation workload survey te,-site command, leh task allocation te a coordinate a;
Mi pakhat chuan angle grinder hmangin rail joint leh switch core te chu a grind a, a polish a;
Rail tihchhiat loh nan grinder-in switch a paltlang hunah equipment position siamrem turin mi pahnih an pui a
Mi pakhat chuan turnout grinder chu a thawk a, fat edge grinding task a thawk a;
Mi dang pangate chuan switch grinding machine chu an thawk dun a, grinding hna chu thawhhona tha tak nen an zo ta a ni.
II a ni. Rail grinding .
Grinding operation neih chhung hian grinding machine 6 te chu a hnungzuiin an thawk a: a hmasa ber tur chu switch grinder a ni a, chu chuan fat edge grinding chu a dah pawimawh ber a A hnuaia 5 fine grinder 5 te hian pre-assigned angles angin operation chu an chhunzawm leh thin.
Rail grinding angle hi -10℃atanga 52℃inkar control a ni. Grinding angle inthlak dan tur ruahmanna chipchiar tak chu hetiang hi a ni:
0℃atanga 12℃(shift khatah℃2) a ni.
12℃atanga 20℃(shift khatah℃4) a ni.
20℃atanga 32℃(shift khatah℃6) a ni.
32℃atanga 52℃(shift khatah℃10) a ni.
Outsourced grinding team (5 fine grinders) te grinding angle distribution chu hetiang hi a ni.
1. Fine grinder hmasa ber hi gauge angle grind nan hman a ni ber a, chutiang chuan wheel tread leh rail force point te chu 0℃(light strip chu centered a ni) a ni a, angle te chu (-10, -8, -2, 0) a ni.
2. Fine grinder pahnihna hi scale, crack, leh chipped parts grinding atan hman a ni ber. Angle te chu (0, 2, 4, 6, 8, 10) te an ni.
3. Third fine grinding machine hi rail surface polishing atan hman a ni ber a, angle te chu (10, 12, 13, 16, 20) a ni.
4. Fine grinder palina hi rel tihpunna atana hman ber a ni a, angle te chu (20, 26, 32, 42, 52) a ni.
5. Fifth fine grinder hi a parts te chu chhiatna nasa zawk nen grind nan an hmang ber a, angle te chu (4, 6, 8, 10, 12) te an ni.
Fince grinder panga chu hmalam downslope joint atanga tan a ni a, fork hnung lam lam hawi zawng zawngah a hnungzuiin a kal zel a, fork core hnung lama joint pawn lam meter 15-ah a grind a ni.
Grinding lai hian operator-te chuan rail-te chu a hun takah hmuh theih leh kut hmanga enfiahna hmangin an enfiah a ngai a ni.
Grinding effect hian beisei ang a tlin loh thu hmuh a nih chuan, reciprocating grinding method chu fish scale, peeling leh falling off on the rail surface ang chi defects te tihbo a nih hma chuan preset angle parameters angin hman chhunzawm zel tur a ni.
ⅲ a ni. Basic Rail grinding .
1. Hnathawh laiin grinding .
Turnout grinder hmang la, grinding wheel san zawng siam la, grinding wheel hnuai lam chu grinding point hnuai lam 20-30mm-ah siam la, grinding wheel angle chu -2℃atanga 18 degree-ah siam la, 2℃khatah angle chu thlak la, batch-a grind-a grind chu planed surface-a fat edge chu a bo vek ang.
Grinding process chhung hian angle hrang hranga grinding pass zat chu damage leh profile deviation angin control a ni. A tum ber chu basic rail-a fat edge tihbo a, basic rail edge chu round leh smooth a nih leh nih loh enfiah a ni.
2. A chung lam atanga a chung lam polishing .
Grinding wheel angle siam nan fine grinder hmang la, 30℃atanga 0℃atanga tan a, 2-4-6℃tin angle thlak danglam, point rail hmalam leh base rail hmalam a fish scale pattern, peeling block leh light band tha lo tak tak te chu a bo vek ang.
Stock rail hma lam hian point rail-a 50mm zau zawng atanga switch hma lama down-slope joint thlenga awmna hmun a kawk a ni. Operation i tih chuan switch chu open position-ah operate hmasa la, chutah chuan fine grinder chu grind turin start rawh.
Grinding process chhung hian grinding wheel angle chu 30℃atanga tan a ni a, zawi zawiin -30℃ah a tlahniam a, angle chu 2 degree, 4℃leh 6℃increment-in a inthlak a ni. Cyclic grinding hmangin fish scale pattern, peeling blocks, light band tha lo, leh basic rail chunglama rel surface inang lo tak tak te chu a bo vek a ni.
Chutih rual chuan angle tina grinding time awm zat chu rel chhiatna℃leh profile deviation a zirin dynamically adjust a ngai a, chu chuan grinding quality chu technical standards a tlin theih nan a pui a ngai a ni.
2′ a ni. Point rail grinding .
1. Point rail grind hmain workload survey neih hmasak phawt tur a ni. Point rail leh stock rail chu mitin enfiah la, khawih la, a sir thau, scratch, severe chipping, fish scale marks, light band tha lo, leh uneven wear te enfiah rawh. Grinding awmna hmun hriat theih nan slate pencil hmangin reduction point tehna chu chhinchhiah rawh.
2. Point rail i grind dawnin point rail tip siam that nan angle grinder hmang la. A tum ber chu point rail tawp atanga meter 1.5 range tihbo a, a limit atanga a value tihtlem leh a piece te te tla thla te, point rail tip siam that a, reduction value’n a mamawh a phuhruk hma loh chuan siam that te, 0.3 chhunga point rail chunglam a smoothness control te a ni.
2m a ni. Fork lairil ber chu grinding a ni.
Grinding hmain Frog Heart Rail leh Wing Rail te hian thau em em, piece bo, scratch, fish scale light band tha lo, wear inang lo, etc. te an nei em tih enfiah hmasa phawt ang che.
Tin, alloy steel frog joint-ah hian fat edge emaw, missing pieces emaw a awm leh awm loh te pawh a awm bawk.
A tlangpuiin fork a thau edge hi a te zawk a, chuvangin fork grind nan angle grinder hman a tha zawk. Angle grinder hi a te a, a flexible a, adjust leh convert a awlsam a, effect tha zawk a nei bawk.
Fine grinder hman a nih chuan process pumpuiah switch core chu grind a nih chuan, conversion leh maneuvering neihna tur hmun a tlem a, switch core chu hman dik loh chuan awlsam takin a chhe thei bawk.
ⅵ a ni. Chamfering of joint leh seams .
Staggered joint te chu angle grinder hmangin an tan tlangpui a, a sirte chu chamfered an ni a, grinding hmangin minor chipping an siam tha bawk.
A hmasa berin joint-a fat edge chu tan la, chutah chuan angle grinder emaw rod grinder emaw hmangin chamfer rawh. Chamfer angle hi 45℃a ni a, a thuk zawng hi 0.8-1.5mm a ni.
1 a ni. Polishing siamthatna .
A tlangpuiin, chhiatna chu paih a nih hnuah, miten polishing an ngaihven lo va, a nih loh leh a bul berah chuan polish an ti lo bawk. Mahse, polishing hian a takin lei chung lama a sir leh a sir tha tak takte chu a ti bo thei a, chu chuan a chung lam chu a ti awlsam zawk thei a ni. Rel-a impact force chu a tlem zawk a, rel service life pawh a rei zawk bawk.
Angle grinders hi switch rail polishing na atana hmanraw pawimawh ber a ni. Operation hmain switch chu open position-ah a kal tur a ni a, chu chu cross-Switch rail section zawng zawng chu elastic polishing pad nei angle grinder hmangin polished a ni.
He operation hian grinding process zawh hnua local pits leh surface burrs awm tawhte tihbo a tum a, chu chuan point rail-a cross-section zawng zawng chu a smooth leh flat tih a tichiang a ni. A bik takin, non-active edge-a fat edge awm theihna tur tihtlem nan point rail-a chamfered area a smooth em em a ngai a ni.
Polishing operation neih chhung hian single-point polishing hi khap tlat a ni. Circular overlapping emaw longitudinally stretched overlapping polishing method hman a tha. Uniform leh comprehensive polishing action hmangin point rail surface-a flatness leh smoothness requirements te chu point rail performance leh service life a nih theih nan a thleng thei a ni.
2 a ni. Site tihfai leh polishing .
Grinding operation zawh hnuah broom emaw snow blower hmangin switch chu tifai la, iron filings la awmte chu paih chhuak la, iron filings chu rail leh insulating joint-ah a awm reng loh nan enfiah rawh.
3EN a ni. Polishing thiamna .
1. Grinding i tih hian rel a chhiat zawkna tur rail i thlang tur a ni. Curved rail a chhiat zawk chuan curved rail chu grind hmasa phawt ang che. Rail dinglam a chhiat zawk chuan straight rail chu grind hmasa phawt ang che.
2. Turnout grinder hmang la, grinding wheel san zawng chu grinding wheel hnuai lam chu grinding point hnuai lam 20-30 mm a ni ang.
3. Grinding i tih hian "knife pakhat chu chemte pakhat hmet la, chemte nen a tan" tih dan hmang ang che. Chutiang chuan grinding hnuah corner nalh tak tak a awm dawn lo.
4. Grinding operation chu chhiatna tenau te tihbo leh chhiatna tenau avanga chhiatna nasa tak tihziaawmna tur a ni. Rail grinding hnua dinhmun tha lo tak takte chu a hun takah thlak tur a ni.
5. Turnout grinder leh fine grinder te an hniam a, cutter an retract a nih chuan uniform speed-in an nawr tur a ni. Hei hian cutter tihhniam hunah rail te chu tharum thawhna nasa lutuk avanga a chhiat loh nan a pui thei a ni. Cutter chu speed inang tlanga retract tur a ni.
6. Grinder chuan staggered center-a hmun hlauhawm tak a paltlang chuan, a ke ruhte chu a kalna tur a kal loh nan leh thinlung track a tihchhiat loh nan machine chu nawr pui turin mi dang a mamawh a ni.
7. Rail chhiatna lam ngaihtuah bakah, rel chung lama light band awm dan azirin rel-a stress point pawh an hre thei bawk ang.
Rail-te chu grinding-in, wheel leh rail inkar contact point chu a theih ang angin a chung lam thlengin a kal a ni. Hei hian rail-a stress concentration a tihziaawm thei a, rail-te chu a inang tlangin a tizual thei a, gauge angle-a effective edge-a fat edge leh fish scales siam pawh a tikhawtlai thei bawk.
8. A hmuna chemte "cutting down" emaw "retract" emaw tih loh tur. Grinder chu grinder a kal lai hian grinding leh cutting zat chu zawi zawiin tihpun emaw tihtlem emaw tur a ni a, chu chuan slope-a uniformity a awm theih nan a kal zel tur a ni.
9. Cutting amount siamrem apiangin a light tur a ni. Track atanga tla lo leh i kut leh ke hliam emaw, rail tihchhiat emaw loh nan operation laiin auxiliary wheel kal dan ngaihven rawh. Grinding wheel hnuah grinder chu move lo la, rail-te chu sparks siam turin a tawk a, chutiang chuan grinding head chu speed sang taka a awmna hmuna a inher loh nan leh rails a tihchhiat loh nan.
10. Rel chunglam chu a sen loh nan grinding wheel chu a hun takah ei tam suh.
11. Machine chu operation laiin a chhe emaw, grinding wheel chu thlak a ngai a nih chuan machine chu off nghal la, a hnuaia step-ah chuan kal leh rawh.
1.
