Dacromet Hex Nuts-Technical Nhanganyaya 

1. Nhanganyaya

Hexagonal nzungu (hex nuts) ndeimwe yezvinonyanya kushandiswa zvekusungirira mumakanika magungano, kuvaka, mota, uye maindasitiri ekushandisa. Kana yakasanganiswa nepamusoro pekurapa kwepamusoro senge Dacromet coating, inoburitsa yakasarudzika corrosion kuramba uku ichichengetedza chaiyo dimensional kushivirira uye kutendeseka kwemuchina.

1.1 Chii Chinonzi Hex Nuts?

Hex nut imhando yefastener ine hexagonal chekunze chimiro uye buri mukati. Iyo nhanhatu-mativi dhizaini inobvumira inoshanda torque application uchishandisa yakajairwa wrenches kana sockets. Hex nzungu dzinowanzo gadzirwa zvinoenderana nemazinga epasi rose se ISO 4032 (style 1 yakajairika nzungu), DIN 934, kana ASME B18.2.2, inovhara huwandu hwakasiyana hwemetric uye humambo.

Zvinhu zvakakosha zvejometri zvinosanganisira dhayamita yeshinda yezita (d), pitch (P), hupamhi kuyambuka mafurati (s), hupamhi mumakona (e), uye urefu hwenati (m). Makirasi emidziyo (e.g., 8, 10, 12 yesimbi) anotsanangura simba remuchina kuti rienderane nemagiredhi ebhaudhi.

1.2 Mhedziso yeDacromet Coating

Dacromet imvura-yakavakirwa, isiri-electrolytic zinc-aluminium flake coating yakagadzirwa muma1970s. Iyo ine zinc yakaparadzirwa zvakatsetseka uye aluminium flakes yakamiswa mune inorganic chromate (kana chromium-isina) binder. Inoshandiswa zvakanyanya ne dip-spin kana nzira dzekupfapfaidza uye inorapwa paanenge 280-320 ° C, inoumba mutete (kazhinji 5-12 μm), yunifomu, sirivheri-grey inodzivirira firimu.

Kusiyana nechinyakare electroplating kana hot-dip galvanizing, Dacromet inopa yepamusoro ngura dziviriro pasina hydrogen embrittlement ngozi-ichiita kuti kunyanya kukodzera yakakwirira-simba fasteners (giredhi 10.9 uye 12.9).

2. Dacromet Coating Technology

2.1 Maumbirwo uye Chimiro

Iyo yekupfekedza inoumbwa neakaturikidzana ezinc uye aluminium flakes akasungwa neinorganic matrix. Iyi lamellar chimiro inogadzira akawanda zvipingamupinyi zvemuviri kurwisa unyoro uye ion inoparadza, nepo zinc inopa chibayiro (galvanic) dziviriro. Aluminium inowedzera zvipingamupinyi zvivakwa uye kudzivirira kupisa.

Mufananidzo 2. Yakareruka yakawanda-layer chimiro cheDacromet coating pane substrate yesimbi

2.2 Maitiro ekushandisa

Iyo yakajairika process sequence ndeye:

1. Kugadzirira kwepamusoro - alkaline degreasing uye abrasive kuchenesa (hapana asidi pickling).
2. Coating application - dip-spin kana spray yemvura-based zinc-aluminium slurry.
3. Centrifuging - kubviswa kwekuwedzera kwekuvhara kuti ive nechokwadi chekukora yunifomu.
4. Kurapa - kubika pa ~ 300 ° C kwemaminetsi gumi nemashanu kusvika makumi matatu kuti uite dense inorganic film. Mabhachi akawanda anogona kuiswa kune epamusoro ekuita mamakisi.

2.3 Mabhenefiti Akakosha

• Kusaita ngura kunoshamisa: 1,000–2,000+ maawa emunyu wekupfapfaidza (ASTM B117) kusvika kumarara tsvuku - kazhinji kashanu kashanu pane yakajairwa zinc plating.
• Hapana hydrogen embrittlement: Non-electrolytic process yakachengeteka kune yakakwirira-simba simbi (10.9 / 12.9).
• Mucheka wakaonda (5-12 μm): Inochengetedza tambo yakakodzera uye dimensional kurongeka; hapana chikonzero che overtapping.
• Kunyanya kupisa tembiricha: Yakagadzikana kusvika ku300 °C inoenderera sevhisi.
• Uniform yekuvhara: Yakanakisa kupinda mukati memukati, shinda, uye yakaoma geometries kuburikidza nedip-spin.
• Consistent friction coefficients: Inogona kusanganiswa nemafuta etopcoat ekudzora torque-tension performance.

Mufananidzo 3. Kuenzanisa kwekufananidzira kwekuita kwemunyu-spray

2.4 Kuenzanisa nemamwe Mabatiro

Tafura 1. Kuenzanisa kwekuita kwezvakajairwa fastener coatings

3. Hex Nuts - Mazinga, Dimensions & Simba

3.1 International Standards

Miyero inonyanyozivikanwa yemametric hex nuts iISO 4032 (style 1 yenguva dzose nzungu) uye yekare asi ichiri kushandiswa zvakanyanya DIN 934. Iyi mipimo inotsanangura zviyero, kushivirira, uye magiredhi echigadzirwa (A, B, C). Makirasi emidziyo yesimbi nzungu anotsanangurwa mu ISO 898-2 (semuenzaniso, makirasi 6, 8, 10, 12).

Cherechedza: DIN 934 uye ISO 4032 zvinosiyana zvishoma mumativi-mafurati emamwe saizi (semuenzaniso, M10, M12, M22). Gara uchisimbisa kuenderana kana uchisanganisa zviyero.

3.2 Common Metric Dimensions (ISO 4032 Style 1)

Tafura 2. Yakasarudzwa metric hex nut dimensions (ISO 4032, mm). s = upamhi mumafurati; e = upamhi mumakona; m = kureba nzungu.

3.3 Zvivakwa Makirasi & Matching

Nzungu dzinofanirwa kufananidzwa kusimba rebhaudhi kuti ive nechokwadi chekuti mubatanidzwa wakundikana nenzira inodzorwa (zvichida mubhaudhi). Zvakajairwa pairings pasi pe ISO 898-2:

• Bolt kirasi 8.8 → Nut kirasi 8 kana kupfuura
• Bolt kirasi 10.9 → Nut kirasi 10 kana kupfuura
• Bolt kirasi 12.9 → Nut kirasi 12

Dacromet coating inonyanya kukosha kune kirasi 10 uye 12 nzungu nokuti iyo nzira inopinza hapana hydrogen embrittlement ngozi inogona kukanganisa yakakwirira-simba zvinhu.

4. Zvishandiso zveDacromet Hex Nuts

Dacromet-yakavharwa hex nzungu dzinopfuura chero kupi kwakakwira corrosion kuramba, dimensional chaiyo, uye kuvimbika kwemuchina zvinodikanwa panguva imwe chete:

Motokari & Kutakurwa

Chassis zvikamu, kumiswa masisitimu, mabhureki magungano, zvinomisikidza injini, uye zvikamu zvepasi pevhu zvakafumurwa munyu wemugwagwa uye tembiricha yakakwira.

Mhepo Simba & Infrastructure

Mabhaudhi eshongwe uye zvitsigiro zvehwaro zvema turbines emhepo ekumahombekombe nekunze, uko kuratidzwa kwemunyu-spray kunogona kudarika maawa e2,000 echinodiwa chekudzivirira.

Kuvaka & Heavy Machinery

Zvimiro zvekubatanidza, midziyo yekurima, michina yemigodhi, uye kuiswa kwekunze zvichienderana nemamiriro ekunze uye kuratidzwa kwemakemikari.

Marine & Chemical Environments

Deck Hardware, mapuratifomu ekumahombekombe, uye michina yekugadzira uko machira echinyakare anoshatisa nekukurumidza.

4.1 Mitemo Yekusarudza

Tafura 3. Kurumidza kusarudza gwara reakavharidzirwa hex nzungu

5. Mhedziso

Dacromet hex nuts inosanganisa kuvimbika kwemechani uye yakamisikidzwa geometry yechinyakare hexagonal nzungu neyepamusoro corrosion dziviriro ye zinc-aluminium flake tekinoroji. Kupfeka kwavo kwakatetepa, kwakafanana kunochengetedza kubatanidzwa kwetambo uye kusimba kwe torque, uku ichiendesa munyu-spray kuita kuri nani pane yakajairwa zinc plating uye isina hydrogen-embrittlement zvinonetsa.

Kune mainjiniya nevatengi vanotsanangudza zvisungo zvemotokari, simba rinodzokororwa, zvivakwa, kana hutsinye hwenzvimbo dzemaindasitiri, Dacromet-yakavharwa hex nzungu inopa chiyero chakasimbiswa chekusimba, kunyatsoita, uye-kureba-kudhura-kushanda.

Paunenge uchisarudza zvigadzirwa, gara uchisimbisa giredhi yekubikira (A/B kana yakaenzana), chiyero chemunyu-spray, friction coefficient (kana yakarungwa topcoat yakaiswa), uye kuenderana nekirasi yekubatanidza bolt uye mamiriro ezvakatipoteredza ekupedzisira application.

References & Standards: ISO 4032, ISO 898-2, DIN 934, ASTM B117, mugadziri wedata mapepa eDacromet / zinc-flake masisitimu (semuenzaniso, DACROMET®, GEOMET®).