Coarse Contractor Thread & Fine Standard Thread

Pali mitundu iwiri yosiyana yodziwika yomwe imagwiritsidwa ntchito kwambiri pamipuno yophulika yophulika ndi zonyamula zophulika. Nthawi zambiri tinkawatcha kuti Coarse Contractor Thread ndi Fine Standard Thread.

Ndiye pali kusiyana kotani pakati pa ulusi wokhuthala ndi ulusi wabwino? Tiyeni tiphunzire za iwo.

Ulusi wa kontrakitala wowoneka bwino ndi ulusi wokhazikika wa 50mm Viwanda pa ulusi 4½ pa inchi (TPI) (114mm), motero amatchedwanso ulusi wa 2-inch nthawi zina. Zili ngati wononga nkhuni. Pali malo ambiri pakati pa ulusi ndipo amawoneka okulirapo.

Ulusi wabwino umatchedwaNational Standard Free-Fitting Straight Mechanical Pipe Thread (NPSM). Ndilo ulusi wowongoka wa Viwanda womwe umagwiritsidwa ntchito kwambiri ku North America, womweamawoneka ngati makina osindikizira. Miyeso iwiri ya ulusi wosalala imagwiritsidwa ntchito kwambiri muzophulika: 1-1/4 ″ ulusi ndi 3/4”-14 ulusi.

Kusiyanitsa pakati pa ulusi wa Contractor ndi ulusi wamba ndizodziwikiratu. Kukula ndi mtunda wapakati pa ulusi wa kontrakitala wokulirapo ndi wokulirapo kuposa ulusi wabwino. Titha kuwawona pachithunzichi monga pansipa.

Kwa Coarse Contractor Thread vs. Fine Standard Thread, sitinganene kuti imodzi ndi yabwino kuposa ina. Clemco ndi Contracor amapereka ulusi wokhuthala wa 50mm monga muyezo komanso mwangongole, ife kuno ku BSTEC timakonda kugwiritsa ntchito ulusi wa kontrakitala ngati ulusi waukulu wa mphuno zophulika ndi zonyamula. Pali mwayi wochepa wodutsa ulusi kapena kuwotcha ulusi chifukwa ndizokulirapo ndipo ndizosavuta kuziyika. Mukawombera ndi media zabwino kwambiri, simudzakhala ndi vuto kuti ma media atseke.

Kwa 1-1 / 4 ″ Fine Thread, ndiyotchuka kwambiri kuposa ulusi wa kontrakitala ku North America chifukwa cha nthawi yake ya Standard. Mukagula blaster yophulika kuchokera ku Schmidt, Empire, Dustless Blasting, Marco, ndi ena, bulu loyamba lomwe limabwera ndi makinawo likhala 1-1/4 ″ ulusi wabwino. Ichi ndichifukwa chake ndizokhazikika pamsika waku North America. Ulusi wabwino umatenga nthawi yotalikirapo kuposa ulusi wokhuthala mukakhazikitsa, ndipo mutha kuyika media mukamagwiritsa ntchito media yabwino kwambiri. Koma ulusi wosalala umakhala ndi mphamvu yolimba kwambiri yolimba komanso yometa ubweya kuposa ulusi wopota wa ulusi wake.

Komabe, mtundu uliwonse wa ulusi womwe mungakonde, onetsetsani kuti mphuno yanu ndi ulusi wanu wolumikizana ndi ulusi zimagwirizana poyitanitsa. BSTEC imanyamula ulusi wa 50mm Contractor ndi 1-1/4″ ulusi wabwino. Tilinso ndi ulusi wa 3/4" wamayunitsi ang'onoang'ono ndi makabati ophulika.