Nuts gaw jak rung matut mahkai lam hta grai ahkyak ai n-gun rawng ai ni rai nna, shanhte a quality gaw jak rung ni a shimlum lam hte kam hpa mai ai lam hpe hkrak hkra machyi shangun ai. Nut ni gaw, jai lang mai ai madang ni hpe hkan sa lu na matu, shanhte hpe grai sawng ai hku jep joi ai lam galaw ra ai. Ndai laika hta, raw materials kaw nna, ngut sai arai du hkra, hkum tsup ai nut jep joi ai lam hpe hkrak tup tsun dan da ai.
1. Laknak san jep ai lam
Hkrang n-gun hpe jep joi ai lam gaw, n-gun n rawng ai lam ni hpe madung hku nna, n-gup magap hpe jep joi ai lam hta shawng nnan na lahkam rai nga ai. Inspection hta:
Cracks, Scratches, and Burrs: Nut ntsa hpe myi hte mu lu ai (sh) magnifying glass hte yu nna, n-gun n rawng ai hte n-gun n rawng ai (sh) machining marks n nga ai hpe kam mai ai.
Thread Integrity: Hkum tsup ai, n-gup n-ga, n-gup n-ga n-gun n rawng ai, shing nrai, n-gup n-ga n-nga ai hpe jep yu u.
Dimensional Consistency: Hexagon (sh) kaga hkrang) hpe langai sha re ai hpe kam na matu, shawng nnan e nut hpe jep yu ai.
2. Dimension shadawn shadang
Nuts ni a dimensional hkrak ai lam gaw shanhte a fit hpe bolt ni hte hkrak hkra hkra machyi shangun ai majaw, jep joi na matu laksan shadawn shadang ni ra ai:
Shinggan Diameter, Inner Diameter, hte n-gun n rawng ai lam ni: Nut a shinggan diameter, kata na n-gang diameter, hte yawng hkra a n-gun hpe shadawn na matu, masat masa ni hpe hkan sa na matu (ISO, DIN, hte GB zawn re ai) hpe shadawn na matu, caliper (sh) micrometer hpe lang u.
Thread Parameters: Thread gauge (go/no{0}}go gauge) hpe lang nna, ra ai lam ni hpe hkan sa lu na kun ngu ai hpe jep yu na matu.
Hexagonal/Square Across-Flat dimensions: Hexagonal nuts ni a matu, n-gup magap ni hta na tsan ai hpe shadawn nna, wrench hte htuk manu hkra galaw u.
3. Thread jep joi ai lam
Dai thread gaw nut a madung rai nna, shi a jep joi ai lam hpe grau nna ahkyak ai hku galaw ya ai:
Go/No{0}} Sa yu u: Go (go) hte no{1}} go gauge hpe lang nna, dai thread hpe hkan sa na matu yu u. Go gauge gaw n-gun n rawng ai sha screw hpe screw galaw lu ra ai, no{3}} go gauge hpe hkum tsup hkra n galaw ging ai.
Thread Profile jep joi ai lam: Thread profiler lang nna, thread profile angle hte pitch deviation zawn re ai parameters ni hpe shadawn u. Ndai gaw tsaw ai-tcision ra kadawn ai lam ni a matu htap htuk ai.
Thread Hardness Testing: Nkau mi hta, n-gun ja ai shara a n-gun hpe chyam yu ra ai, n-gun hpe ninghkap lu ai atsam hte n-gun hpe n-gun jaw lu na matu.
4. Hardness Testing
Nut a n-gun ja ai gaw shi a n-gun atsam hte n-gun yawm ai lam hpe hkra machyi shangun ai. Lahta na ladat ni hpe lang ai gaw;
Rockwell Hardness Tester (HRB/HRC): Carbon steel hte alloy steel nuts ni hpe jai lang mai ai.
Brinell Hardness Tester (HB): Grau n-gun ja ai arung arai ni a matu htuk manu ai (copper hte aluminum nuts zawn re ai), yawng hkra hpe garan ginhka ai lam hpe chyam dinglik ai.
Vickers Hardness Tester (HV): Kaji ai- hpe n-gun n rawng ai n-gup magap ni a matu hkan nna, hkrak ai buga na yak hkak ai lam ni hpe jaw ya ai.
5. Ladat hte seng ai chyam dinglik ai lam
Nut ni a jak rung atsam ni gaw shanhte a lit hpe hkrak hkra machyi shangun ai-bearing atsam hpe hkra machyi shangun ai. Masha law law lang ai chyam dinglik ai lam ni hta:
Tensile Strength Testing: tensile chyam dinglik ai jak hpe lang nna, n-gun npu na nut langai a n-gun kaba dik htum hpe chyam yu ai.
Proof Load Testing: Nut kata na plastic n-gun hpe chyam yu na matu, madang hte maren (ISO 898 zawn re ai) hte maren, laksan lit hpe jai lang ai.
Torque Testing: Nut hpe n-gun ja hkra galaw nna hpaw ai shaloi lang ai torque hpe shadawn nna, hpawng chyawm ra ai lam ni hpe hkan sa lu na matu.
gaw
Dai nut hpe zinc plating, nickel plating, shing nrai, phosphating zawn re ai ntsa na tsi lajang ai lam ni hte tsi lajang da ai rai yang, jat nna chyam dinglik ra ai:
Coating Thickness: Coating thickness gauge hpe lang nna, coating gaw ra kadawn ai lam ni hpe hkan sa ai hpe jep yu u (ga shadawn, zinc plating gaw 5μm hta grau kaba ai (sh) maren sha re).
Corrosion hpe ninghkap ai chyam dinglik ai lam: Hka htung hpe makawp maga ai lam hpe hka garan ai chyam dinglik ai lam hku nna jep joi ai lam galaw ai (ga shadawn, 5% NaCl hka, 48-96 hkying hkum).
Adhesion Testing: Coating hpe n-gun rawng ai hpe jep yu nna, n-gun n rawng hkra makawp maga ya ai.
7. N jahten ai chyam dinglik ai lam (ra ai rai yang)
Hkamja lam grai ra ai nut ni a matu (ahkyak ai aerospace hte mawdaw a daw ni zawn re ai) ni a matu lawu na lam ni hpe ra sharawng mai ai:
Magnetic Particle chyam dinglik ai lam (MT): Hkamja lam sawk sagawn ai lam ni gaw ntsa (sh)-} n-gup magap ni a makau kaw n-gun n rawng ai.
Ultrasonic chyam dinglik ai lam (UT): Hka lim ai hka htung ni hte shinggyim hkum hkrang hta lawm ai lam ni zawn re ai kata na n kaja ai lam ni hpe sawk sagawn ai.
X{0} Ray Ray Testing (RT): Precision nuts ni a kata na hkrang hpe sawk sagawn na matu hkan sa mai ai.
8. Hpang jahtum jep joi ai lam hte pat shingdang ai lam
Test yawng ngut ai hpang, qualified nut ni hpe lawu na hte maren galaw ai:
Sampling Re{0}}inspection: Random sampling hpe batch hku nna n bung hkra galaw ai.
Marking hte Traceability: Specification, batch, hte chyam dinglik ai aten zawn re ai shiga ni hte ka da ai gaw, quality hpe hkan tam lu ai atsam hpe loi shangun ai.
Rust hpe makawp maga ai lam hte hkra machyi ai lam: Ra ai hku nna, n-gun n rawng ai hpe makawp maga ai tsi (ga shadawn, sau htu ai) hpe galaw ai, hka n-gun- hte shock{3}} hpe n-gun n-gun shayawm ya ai packaging hpe lang ai.
Daw dan lam
Dai nut jep joi ai lam gaw, tatut jai lang ai lam ni hta shim lum lam hte kam hpa mai ai lam ni hpe hkam la lu na matu, hkrang bung sumla, shadawn shadang, shingnip shingna, n-gun ja ai lam, jak rung atsam ni lawm ai lam amyu myu hpe shinggrup da ai. Nut ra kadawn ai lam ni gaw, bungli amyu myu hta n bung chye ai (gaw gap, mawdaw, nbungli zawn re ai), raitim, n-gun ja ai jep joi ai madang ni gaw, hkam kaja lam hpe hkam la lu na matu ahkyak ai lam naw rai nga ai.
