Yadda za a gwada hex bolts

1. Mu yawanci kallon bayyanarkusoshitare da idanunmu don ganin ko electroplated black zinc na bolts yana da kyau, ko akwai tabo ko babu.

2. Gwajin tsauri na kusoshi. Tsaftace layin mai a kanfastenersurface da man fetur ko tsaftacewa wakili, jiƙa shi a cikin 3% tsaka tsaki ruwan jan karfe sulfate na 40-60s, da kuma kiyaye shi da tsirara idanu bayan babu wata alama a saman.

3. Binciken juriya na lalata na kusoshi. Tsaftace layin mai a saman fasinja tare da man fetur ko wakili mai tsaftacewa, jiƙa shi a cikin 0.17% sulfuric acid bayani na 20-40s, kuma kula da shi da idanu tsirara bayan babu wata alama a saman.

4. Saka gwajin juriya na kusoshi. Tsaftace layin mai a saman fasinja tare da man fetur ko wakili mai tsaftacewa, rataye bututun gilashi tare da diamita na ciki na 10mm da tsayin 500mm a tsaye sama da fastener don auna shi, kuma yanayin dubawa na fastener shine 45 ° daga bututun gilashi, tare da nisa na 30mm. Shigar da mazugi sama da bututun gilashi, kuma auna 100g na yashi ma'adini tare da girman barbashi na 0.5-1.0mm da kusurwoyi masu kaifi. Yashi zai fadi da yardar kaina kuma ya yi tasiri a saman maɗauri. Bayan yashi ya zubo, a hankali a goge saman fasinja, a nutse a cikin 0.5% tsaka tsaki na jan karfe sulfate na tsawon shekaru 30, cire shi da wanke shi da ruwa mai gudana, sannan a kiyaye shi da idanu tsirara.

5. tsaftacewa ingancin dubawa don blackening fim na kusoshi. Bayan da fastener aka baki da kuma tsabtace, da kuma kafin saponification da man nitsewa, sauke 1-2 saukad da na 10% phenolphthalein barasa bayani a kan surface. Idan maganin ruwan hoda ne, yana nuna cewa ba shi da tsabta.

6. Geometric size dubawa. Dangane da tsarin tsari, zane-zane da takaddun tsari na masu ɗaure, bincika tare da kayan aiki masu dacewa, katunan da kayan aunawa.

7.Yawan dubawa na kusoshi.

① Lokacinyawan samarwa, za a duba duk mahimman bayyanar; Fitowar gabaɗaya fasteners ba zai zama ƙasa da guda 10 ba. Ƙarfafawa da tsabtace ingancin dubawa ba zai zama ƙasa da guda 1-3 a kowane tsari ba.

② Duk kayan haɗin da aka samar a cikin tsari na gaba ko tare da buƙatu na musamman za a bincika; Ko duba tabo bisa ga takaddun aiki.

③ Idan wasu abubuwan da ke cikin gwajin samfurin ba su cancanta ba, za a ninka adadin don dubawa. Wadanda har yanzu ba su cancanta ba a aikin dubawa za a kula da su azaman sake yin aiki ko gogewa.