SCH12 gaw Japan mungdan na hpaga lam madang hku nna austenitic n-gun-hkam sharang lu ai n-gang rai nna, madung hku nna JIS G 5122 N-gun-N-gun n-hkap la lu ai n-gang hte N-gun -N-gun n-gun n-rawng ai Alloy Castings ni hpe hkan sa ai rai nna, Miwa mungdan a CNS G 3093 madang hta mung lawm ai. Hpa majaw nga yang, chromium-nickel n-gun ja ai n-gang-hkum hkrang n-gun ja ai n-gang langai hku nna, n-gun ja ai -n-gun ja ai jak rung atsam ni, n-gun n-gun n-rawng ai hte nkau mi a n-gun ja ai n-gang hpe hkam sharang lu ai SUS3B steel hpe hkam sharang lu ai majaw, n-gun ja ai jak rung arung arai ni a matu lang ai arung arai langai mi rai nga ai.
I. SCH12 a madung arung arai atsam marai ni
1. Hpaji masa (Mass Fraction, %)
Dai hta chromium-nickel n-gun rawng ai n-gun rawng aiite alloy system, ra ai hku nna molybdenum (max 0.5%) hpe jat bang nna, nbung hpe ninghkap lu ai atsam hte jak rung atsam ni hpe hkrak hkrak hkang lu ai. Dai laksan mahkawn hkawn ai ginra gaw lawu na hte maren rai nga ai.
| Hkarang jet | C | Si | Mn | P | S | Ni | Cr | Mo |
|---|---|---|---|---|---|---|---|---|
| Malawm | 0.2-0.4 | 2.0 hta n law ai (sh) maren sha re. | 2.0 hta n law ai (sh) maren sha re. | 0.04 hta n law ai (sh) maren sha re. | 0.04 hta n law ai (sh) maren sha re. | 8.0-12.0 | 18.0-23.0 | 0.5 hta n law ai (sh) maren sha re. |
2. Madung jak rung a atsam marai ni (As-cast)
Shi gaw grai kaja ai jak rung atsam ni hpe madun dan ai, n-gun ja ai-hkum hkrang bungli galaw ai masa hta lit -hkap la lu ai ra kadawn ai lam ni hpe hkan sa nna, plastic n-gun yawm ai lam n nga ai:
Hkrang shapraw ai n-gun: 235 N/mm2 (MPa) hta grau kaba ai (sh) maren sha re.
Tensile N-gun: 490 N/mm2 (MPa) hta grau kaba ai (sh) maren sha re.
Elongation: 23% hta grau kaba ai (sh) maren sha re
Brinell a ngang kang ai lam: 123 HB daram (hpyen n-gun hpe n-gun dat ngut ai hpang)
3. Core Hkum hkrang hte Katsi ai-N-gun hpe ninghkap lu ai atsam marai ni
0-100℃hta 16.2×10−6/℃, 0-650℃hta 20.2×10−6/℃, nbung laru kaba ai cyclic bungli galaw ai masa hta htuk manu ai nbung laru jat ai atsam ni hte;
Heat-Resistant Temperature: 650℃jan ai nbung hta aten galu-n-gun n-gun rawng ai hku bungli galaw lu ai , nbung n-gun lapran hte n-gun kaba ai-hpyen bungli galaw ai arung arai ni hta jai lang mai ai;
Metallographic Structure: Austenitic matrix gaw nbung n-gun hpe hkam sharang lu ai, akajawng sha nbung galai shai ai majaw n-gun n rawng ai;
Kaga atsam marai ni: Non-magnetic, grai kaja ai castability, n-gun ja ai- hkrang bung ai daw ni de gap mai ai.
4. Corrosion hpe ninghkap lu ai atsam
18%-23% chromium law ai hpe kam hpa let, ntsa kaw n-gun ja ai Cr2O3 oxide film hpe loi loi hte byin shangun nna, 1000 hpe ninghkap lu ai atsam kaja jaw ya lu ai.alkaline media hte n-gun n rawng ai n-gun n rawng ai grup yin, hte bungli galaw ai shara ni hta n-gun kya ai corrosive media ni a majaw hka lim ai hpe hkam sharang lu ai. Raitim, shi a n-gun ja ai n-gun ja ai acid hte chloride law ai sau ni zawn re ai n-gun ja ai n-gun ja ai makau grup yin ni hta shi a n-gun ja ai n-gun yawm mat na re.
II. SCH12 a laksan jai lang ai mabyin masa ni
Heat-hkam sharang lu ai n-gang langai hku nna, SCH12 gaw madung hku nna 100 npu na bungli galaw ai arung arai ni hpe n-gang galaw na matu htuk manu ai.lapran tsang hte tsaw ai-katsi ai, jak rung lit nkau mi hpe gun hpai ai thermal cycling masa ni, grau nna, casting hku nna byin pru wa ai yak hkak ai arung arai ni a matu. Shi a laksan jai lang ai shara ni gaw lawu na hte maren rai nga ai.
1. N-gun jak jak rung
2019 ning a matu madung arung arai langai mi re.wan jak jak n-gang ni, n-gun ja ai-n-gun ja ai hka htung ni a bungli galaw ai makau grup yin hpe hkan sa nna, n-gun ja ai-n-gun ja ai n-gun, n-gun n-gun shingjawng ai lam hte jak rung centrifugal n-gun hpe hkam sharang lu ai. Shi a hkam sharang lu ai atsam hte magam bungli prat hpe grau kaja hkra galaw ai casting ladat ni hku nna grau kaja hkra galaw lu ai. Gas turbine hte generator ni a n-gun n-gun n-gun n-gun n-gun n-gun hte n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun ni a matu mung lang ai.
2. Boiler hte N-gun dat hka htung hka htung
ngu nna galaw mai ai.tsaw ai-katsi ai n-gun300℃jan bungli galaw ai nbung laru, n-gun shingjawng ai lam hte alkaline hka a hkam kaja lam makau grup yin (highly the pressure consulect of boilers hte shawng de tsun lai wa sai), n-gun hpe ninghkap lu ai, pat da lu ai hte jak rung lit-hkap la ra ai lam ni hpe hkap la lu ai.
3. Hpyen hte n-gun ja ai arung arai ni a ginra
2019 a matu lang ai.wan wut hkum hkrang hpe n-gun dat ai, katsi ai - hpe ninghkap lu ai madi shadaw ai lam ni, arung arai htinggaw/htinggaw nimetallurgical furnaces hte heat treatment furnaces ni a, n-gun ja ai-n-gun ja ai n-gun n-gun hte n-gun n-gun shingjawng ai lam hpe hkam sharang lu ai, n-gun n-gun n-rawng ai nbung a majaw n-gun n-rawng ai hpe ninghkap lu ai majaw, dai jak ni hpe aten galu-n-gun n-gun n-rawng hkra galaw lu ai.
4. General Industrial Hkringmang Daju-Hkringhtawng Hkrun Lam Arung Arai
2019 hta jai lang mai ai.lapran tsang hte tsaw ai-katsi ai pump hte valve n-gun, nbung katsi ai pipeline n-gun, katsi ai-hkam sharang lu ai arung arai nichemical hte nta gawgap ai arung arai ni a hpaga lam ni hta, grau nna, casting galaw ra ai, n-gun ja ai-n-gun hte n-gun n-gun n-rawng ai lam ni nga ai, yak hkak ai npawt nhpang daw ni a matu htuk manu ai.
III. Laika buk a madung akyu ara ni hte jai lang ai lam ni
1. Madung Akyu Ni
Grai kaja ai katsi hpe ninghkap lu ai: Austenitic matrix hpe chromium-nickel alloy kaba hte kayau nna, n-gun ja ai shara hta n-gun yawm mat ai hte n-gun ja ai n-gun hpe hkam sharang lu ai atsam nga ai, aten galu-n-gun ja ai-n-gun ja ai cyclic bungli masa ni a matu htuk manu ai;
Grau kaja ai Castability: Hpang na galaw ai lam hta yak hkak ai lam n nga ai sha, yak hkak ai- hkrang bung ai arung arai ni de bang mai ai, galaw shapraw ai hte galaw shapraw ai manu hpe shayawm ya lu ai;
Kaja ai hkum tsup ai jak rung atsam marai ni: N-gun kaba ai hte plasticity lahkawng yan nga ai, nbung katsi ai hpe hkam sharang lu ai sha n-ga, mechanical load ra kadawn ai lam ni hpe mung hkap la lu ai, n-gun n rawng ai;
Nkau Corrosion hpe ninghkap lu ai atsam: Alkaline hte mild oxidative makau grup yin ni hpe ninghkap lu ai, industrial high-temperature makau grup yin law malawng a corrosion ra kadawn ai lam ni hpe hkan sa lu ai.
2. Jai lang ai lam hta ahkyak ai lam ni
Ndai arung arai gaw .nlung htu ai, madung hku nna, plate hte bar zawn re ai shinggrup da ai profile ni a matu n re ai sha, cast component ni a matu lang ai;
Shi a n-gun ja ai n-gun (n-gun ja ai acid, n-gun ja ai sau, n-gun ja ai oxidation) hpe ninghkap lu ai atsam gaw general rai nga ai. Ndai zawn re ai bungli masa ni a matu, anti-n-gun n rawng ai coatings ni hpe lang ra ai (sh) grau tsaw ai-grade alloy arung arai ni hpe galai ra ai;
Shi a n-gun ja ai-n-gun ja ai oxidation hpe ninghkap lu ai atsam gaw grai kaja ai raitim, 900℃jan ai ultra-n-gun ja ai makau grup yin ni hta, matrix hpe n hkra hkra, npu na oxide film a masa hpe ayan jep yu ra ai;
Casting galaw ngut ai hpang, shi a high-temperature mechanical atsam hte thermal stability hpe grau kaja hkra galaw lu ai, n-gun rawng ai n-gun rawng ai ladat ni rai nga ai, n-gun rawng ai n-gun rawng ai ladat ni hku nna, n-gun rawng ai n-gun rawng ai ladat ni hku nna, n-gun rawng ai n-gun rawng ai ladat ni hku nna grau kaja hkra galaw lu ai.
