Cast alloy lung seng htu ai leng leng rim nigrai sawng ai masa hta bungli galaw ai: payload kaba, lung seng hpe bai kahtap hkra ai, katsi katsang hte shinggrup ai n-gun. Rim cracks gaw hpaw da ai lung seng htu ai shara ni hte lung seng htu ai shara ni hta byin chye ai hte manu dan dik htum hkrat sum ai lam langai mi rai nga ai. Crack law law gaw ma shangai ngut ai hpang kalang ta n pru ai; shanhte gaw bungli galaw ai shaloi loi loi hte jat wa nna, jak hpe akajawng sha jahkring kau ya lu ai. Anqiang gaw, raw material hpe shinggrup da ai, galaw shapraw ai, jep joi ai lam hte shara kaw jai lang ai lam ni hpe shinggrup da ai, cast alloy mining wheel rims ni hta n-gun n rawng hkra galaw mai ai lam ni hpe kadun dawk tsun dan ai.
1. Kaja ai Cast Alloy Steel arung arai hpe lata la u
Material gaw crack hpe makawp maga na matu npawt nhpang rai nga ai. Anqiang gaw, n bung ai lung seng htu sha ai bungli masa ni a matu, bung ai cast steel grade ni hpe lang ai.
Laksan masat da ai laika hpe lu la u
Low‐grade galai shai ai n-gang gaw n-gun n kaja ai. Tengman ai hku n-gun dat ai ladat ni hte pyi, grai hkra machyi ai shaloi, microcracks ni loi loi hte byin pru wa chye ai. Arung arai ni hpe n shagun shi yang, arung arai masat masa hte jak rung chyam dinglik ai shiga ni hpe jep yu ra ai.
2. Hka lum ai hpe grai ja ai hku tsi lajang ai (Quenching & Tempering)
2019 ning a matu n-gun n rawng ai hpe shayawm lu na matu, n-gun rawng ai hku tsi lajang ai gaw madung lahkam re.n-gang rim ni. Casting gaw leng blank kata kaw ngam nga ai stress kaba hpe tawn da ya ai. Tengman ai hku n-gun shayawm ai hte n-gun shayawm ai lam n nga yang, kata na myit ru myit tsang lam gaw locked sha naw rai nga ai. Mining vibration npu hta makoi da ai micro‐cracks ni gaw lawan ai hku jat wa na re.
Anqiang gaw, n-gun rawng ai rim ni a matu, madang masat da ai n-gun rawng ai + n-gun rawng ai lam ni hpe galaw ya ai. Ndai ladat gaw, magri n-gun hpe grau kaja hkra galaw ya nna, casting residual stress hpe shapraw kau ya ai, ngang kang ai lam hpe grau kaja hkra galaw ya ai hte, n-gun n-gun hpe shayawm ya ai. Hka lum ai aten hpe kadun hkra galaw ai (sh) n grin ai wan wut ai nbung katsi ai lam gaw n bung ai n-gun ja ai lam hpe byin shangun nna, n-gun n rawng ai lam hpe grai shabyin ya na re.
3. Casting a hkam kaja lam hte n kaja ai lam ni hpe jep joi ai lam hpe hkang lu na
Dai majaw, n-gun n rawng ai lam ni gaw, rim n-gun rawng ai lam ni a rudi lam ni rai nga ai: shrinkage cavities, porosity, inclusions hte cold laps ni. Ndai kaji kajaw n kaja ai lam ni gaw cyclic load npu hta crack npawt nhpang ni tai wa ai.
Anqiang gaw, lahkam law law hku jep joi ai lam hpe galaw ai:
Casting galaw ngut ai hpang, myi hte mu lu ai ntsa hpe jep yu ai
Makoi da ai kata na n kaja ai lam ni hpe mu tam na matu n jahten sharun ai chyam dinglik ai lam
Batch shagu a matu jak rung arung arai sample chyam yu ai
Rim ni hta kata na casting n kaja ai lam ni nga ai hpe n ngut shi yang, n sa ya shi yang ningdang kau na re.
4. Tengman ai jak hte myit ru myit tsang lam hpe hkang lu ai
N kaja ai hku galaw ai gaw rim hub (sh) spoke galai shai ai shara ni hta sharp notches byin shangun chye ai. Ndai n-gun ja ai jut ni hta myit ru myit tsang lam ni law law nga ai majaw, lang hte lang hkrat sum ai shaloi, n-gun n rawng ai shara ni byin pru wa ai. Anqiang gaw myit ru myit tsang lam hpe shayawm na matu galai shai ai daw ni hta fillet design hpe grau kaja hkra galaw ai. Machining parameters ni hpe grai n-gun n-jaw ai sha, ntsa lam hpe n-hten hkra hkang ai.
5. On‐Site hta jung ai hte galaw ai hta kaja dik ai ladat ni
Hpa majaw nga yang, n kaja ai rim ni pyi, shut ai hku galaw yang, n-gun yawm mat chye ai.
Tire pressure hpe hkrak hkra tawn da u. Over‐inflation gaw hkra machyi ai lam hpe grau jat shangun ai; under‐inflation gaw rim hpe n kaja hkra galaw ya ai.
Matut manoi grai law hkra galaw ai hpe koi nga u. Rated payload hta jan ai gaw, shawng nnan rim hkrat sum ai lam a madung lam rai nga ai.
Violent curb (sh) lung seng ni hkrat sum ai hpe pat shingdang u. Kalang ta grai hkrat sum ai majaw, kalang ta myit ru myit tsang lam byin wa nna, n-gun yawm wa chye ai.
Galoi mung jep joi ai lam: Arung arai ni hpe gram lajang ai shaloi, spokes, hub hte weld/cast galai shai ai shara ni hta kaji kajaw n-gun n rawng ai hpe jep yu ra ai. Aten dep mu tam ai gaw crack jat wa ai hpe jahkring kau ya ai.
6. Galoi mung gram lajang ai & Crack hpe jep joi ai aten ladaw
Hka htung galaw ai ni gaw aten kadun laman jep joi ai lam hpe galaw ra ai. Micro‐cracks ni n kaba shi yang tam na matu visual check hte NDT ladat ni hpe lang u. Kaji kajaw n-gun n rawng ai hpe mu jang, rim hpe kalang ta jahkring kau u. Matut nna galaw ai rai yang, n-gun n rawng ai shara ni lawan ai hku chyam bra wa nna, rim hkrat sum mat na re.
Rim Cracks byin shangun ai shut ai lam ni
Arung arai manu hpe shayawm na matu n-gun n law ai n-gang hpe lang ai
Skipping (sh) asan sha galaw ai quenching & tempering katsi tsi lajang ai lam
Lung seng htu ai mawdaw (sh) htaw ai mawdaw ni hpe matut manoi grai law hkra htaw ai
Sharp galai shai ai hkrang gaw grai myit ru myit tsang lam hpe shabyin ya ai
Shani shagu jep joi ai lam hta mu lu ai kaji kajaw n-gun n rawng ai lam ni hpe n myit mada ai
Cast alloy mining wheel rims ni hta n-gun n rawng ai hpe pat shingdang na matu, arung arai lata ai, htu ai, katsi ai hku galaw ai, jak hte galaw ai hte shara kaw galaw ai kaw nna jawm hkang ra ai.Anqiang a nhprang wan htu ai rim nin-gun ja ai lungseng htu sha ai shara ni a matu n-gun ja ai n-gang hpe shayawm kau lu na matu, n-gun ja ai batch jep joi ai lam hte, n-gun ja ai cast steel hpe hkap la nna, n-gun ja ai n-gang hpe hkum tsup hkra galaw na.