Hex Bolts nwere mkpuchi dacromet 

1. Okwu mmalite

Hex bolts (hexagon head bolts) bụ otu n'ime ihe ndị a na-ejikarị eme ihe n'ihe owuwu, igwe, mgbakọ ụgbọ ala, na akụrụngwa. N'ebe ndị na-emebi emebi - ihe ndị dị n'ụsọ oké osimiri, osisi kemịkal, okporo ụzọ, àkwà mmiri, na ụlọ elu ígwè dị n'èzí - a na-ekpebikarị ndụ ọrụ nke nkwonkwo bolted ọ bụghị site na ike nke ígwè, kama site na ịdịte aka nke mkpuchi nchebe ya.

Ihe mkpuchi dacromet (nke a makwaara dị ka DACROMET, Dacromet zinc-flake mkpuchi, ma ọ bụ zinc-aluminom flake mkpuchi) bụ ihe ntughari na mgbochi nke mmiri na-etinye site na ntinye-spin ma ọ bụ ịgbasa usoro ma gwọọ ya na obere okpomọkụ. Kemgbe e mepụtara ya na United States na 1970s na mmepụta mmepụta ihe na-esote na Japan na Europe, Dacromet aghọwo ihe ngwọta nchebe corrosion maka nnukwu ike, karịsịa na akara 8.8 na n'elu, ebe ikpo ọkụ na-ekpo ọkụ nke omenala na-ebu ihe ize ndụ hydrogen na nsogbu akụkụ.

2. Kedu ihe bụ Hex Bolt nwere mkpuchi Dacromet?

Ihe mkpuchi hex nwere mkpuchi dacromet bụ ọkọlọtọ hexagon isi bolt (kwa ISO 4014 / ISO 4017 / DIN 931 / DIN 933 ma ọ bụ ASME B18.2.1) nke kpuchie elu ya site na mkpuchi flake nke zinc etinyere site na slurry dabere na mmiri nwere:

• Zinc flakes na aluminom flakes- mgbochi corrosion-echebe na-arụ ọrụ (oke ihe dị ka 75% Zn / 25% Al site na ọdịnaya siri ike);
• Ngwakọta chromium ma ọ bụ passivators na-enweghị chromium- nye onwe-agwọ ọrịa passivation na ọkọ ebe;
• Inorganic binders na cellulose thickeners- jikọta flakes n'ime nnukwu ihe nkiri na-akwado;
• Mmiri a tọhapụrụ- onye na-ebu ibu, na-eme ka usoro VOC ghara ịdị na ya na gburugburu ebe obibi.

A na-etinye ihe mkpuchi ahụ site n'itinye (ma ọ bụ ịgbasa) na-esote centrifugal spinning iji wepụ oke slurry, wee gwọọ ya na ihe dịka 280-330 ° C maka nkeji 20-40. Otutu okirikiri dip-spin cycles (nke na-abụkarị abụọ) na-ewu mkpuchi mkpuchi nke 6-10 μm; Klas dị arọ na-eru 12-15 μm.