Enwere isi ihe atọ maka ọkwa 12.9 bolts (12.9 wedge arịlịka, 12.9 site na mkpuchi): carbon ígwè wedge arịlịka, igwe anaghị agba nchara wedge arịlịka, na ọla kọpa.
(1) Carbon ígwè (dị kacarbon ígwè Wedge Anchor Bolts). Anyị na-ama ọdịiche dị iche iche nke obere carbon ígwè, ọkara carbon ígwè, elu carbon ígwè na alloy ígwè dabeere na carbon ọdịnaya na carbon ígwè ihe.
1. obere carbon ígwè na C% <0.25% na-akpọkarị A3 ígwè na China. Mba ọzọ, a na-akpọ ha 1008, 1015, 1018, 1022, wdg.
2. Ọkara carbon ígwè 0.25%
Alloy steel: Tinye ihe alloy na igwe carbon nkịtị ka iwelie ụfọdụ ihe pụrụ iche nke ígwè: dị ka 35, 40 chromium silver, SCM435
3. 10B38. Fangsheng skru na-ejikarị SCM435 chromium-platinum alloy steel, nke ihe mejupụtara ya bụ C, Si, Mn, P, S, Cr, na Mo.
(2) igwe anaghị agba nchara (dị ka eriri igwe anaghị agba nchara). Nrụ ọrụ ọkwa: 45, 50, 60, 70, 80, tumadi austenite (18% Cr, 8% Ni), ezigbo okpomọkụ na-eguzogide.
Ezigbo nguzogide corrosion na ezigbo weldability. A1, A2, A4 martensite na 13% Cr nwere nguzogide corrosion na-adịghị mma, ike dị elu na nguzogide dị mma. C1,C
2. C4 ferritic igwe anaghị agba nchara. 18% Cr nwere ikike ịdị mma na nguzogide corrosion siri ike karịa martensite. Ka ọ dị ugbu a, a na-emepụta ihe ndị a na-ebubata na ahịa na Japan.
Detụ ire. Dabere na ọkwa ahụ, a na-ekewa ya na SUS302, SUS304 na SUS316.
3) Ọla kọpa. Ihe ndị a na-ejikarị bụ ọla…zinc-ọla kọpa alloy. H62, H65, na H68 ọla kọpa ka a na-ejikarị dị ka akụkụ ọkọlọtọ na ahịa.
12.9 Mmetụta nke ihe dị iche iche na ihe mkpuchi na njirimara nke ígwè:
1. Carbon (C): Na-eme ka ike nke akụkụ ígwè dịkwuo mma, karịsịa ọgwụgwọ ọgwụgwọ okpomọkụ ya, ma ka carbon ọdịnaya na-abawanye, plasticity na ike na-ebelata.
Ma ọ ga-emetụta arụmọrụ ịgbado ọkụ oyi na ịrụ ọrụ ịgbado ọkụ nke akụkụ ígwè.
2. Manganese (Mn): Na-eme ka ike nke akụkụ ígwè dịkwuo mma ma mee ka ike sie ike ruo n'ókè ụfọdụ. Ya bụ, ike nke ntinye siri ike na-abawanye n'oge mmepụta ọkụ.
Ọ nwekwara ike melite ogo elu, mana nnukwu manganese na-emebi ductility na weldability. Na ọ ga-emetụta njikwa mkpuchi n'oge electroplating.
3. Nickel (Ni): Na-eme ka ike nke akụkụ ígwè dịkwuo mma, na-eme ka ike sie ike na obere okpomọkụ, na-eme ka iguzogide corrosion ikuku, ma na-eme ka ọgwụgwọ okpomọkụ kwụsie ike.
Mmetụta ọgwụgwọ bụ iji belata mmetụta nke mgbaka hydrogen.
4. Chromium (Cr): Ọ nwere ike imeziwanye ike siri ike, melite nguzogide iyi, melite nguzogide corrosion, ma nyere aka ịnọgide na-enwe ike na okpomọkụ dị elu.
5. (Mo): Ọ nwere ike inye aka ịchịkwa arụpụtaghị ihe, belata mmetụta nke ígwè na iwe ọkụ, ma na-ekere òkè dị ukwuu n'ịkwalite ike ike na okpomọkụ dị elu.
Nnukwu mmetụta.
6. Boron (B): Ọ nwere ike imeziwanye ike ike ma nyere aka mee ka obere carbon ígwè na-emepụta nzaghachi a na-atụ anya na ọgwụgwọ okpomọkụ.
7. Alum (V): na-eme ka ọka austenite na-eme ka ọ dịkwuo mma
8. Silicon (Si): Na-emesi ike nke akụkụ ígwè. Ọdịnaya kwesịrị ekwesị nwere ike imeziwanye plasticity na ike nke akụkụ ígwè.
35CrMo steel bụ ihe magburu onwe ya maka ọkwa injin 129 na-ejikọ mkpanaka mkpanaka ma nwee ike izute ihe akụrụngwa chọrọ nke ọkwa 12.9 bolt.
Ọ bụ usoro dị irè iji nweta ọgwụgwọ okpomọkụ nke nchebe nitrogen maka ọkwa 12.9 na-ejikọta mkpanaka mkpanaka, thinning na jụrụ nke akụkụ mkpanaka, na eri na-atụgharị mgbe ọgwụgwọ okpomọkụ gasịrị, a pụkwara ịmepụta ya.
Mepụta bolts dị elu dị elu, nke ziri ezi
A na-ekewa ọkwa arụmọrụ nke bolts ejiri maka njikọ nhazi ígwè n'ime karịa 10 akara ule dị ka 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, na 12.9.
N'ime ha, bolts nke ọkwa 8.8 na n'elu bụ nke obere carbon alloy steel ma ọ bụ ọkara carbon ígwè na-eme ka a gwọọ ya (menyụọ na iwe ọkụ), nke a na-akpọkarị bolts ike dị elu.
A na-akpọkarị ndị ọzọ bolts nkịtị. Akara ọkwa arụmọrụ bolt nwere akụkụ abụọ nke ọnụọgụ, nke na-anọchi anya uru ike tensile ọnụ nke ihe bolt na
Oke mkpụrụ-ike. Dịka ọmụmaatụ, bolt nwere ọkwa arụmọrụ 4.6 pụtara:
1. The nominal tensile ike nke bolt ihe ruru 400MPa;
Oke ike mkpụrụ nke ihe bolt bụ 0.6:
2. The nominal mkpụrụ ike nke bolt ihe ruru 400 × 0.6 = 240MPa arụmọrụ larịị 10.9 elu-ike bolts. E kpochala ihe ahụ ọkụ
3. Mgbe nhazi, ọ nwere ike nweta:
1. The bolt ihe nwere a nominal tensile ike nke 1000MPa.
2. Nkwenye-na-ike nke ihe bolt bụ 0.9:
3. The nominal mkpụrụ ike nke bolt ihe ruru 1000 × 0.9 = 900MPa larịị.
10.9 ọkwa kposara chọrọ ọkara carbon alloy ígwè quenching na tempering okpomọkụ ọgwụgwọ, dị ka 35CRMO 40CR na ndị ọzọ ihe.
Ndekọ nyocha ọkwa bolt bụ ike tensile nke bolt. Ọ naghị't n'agbanyeghị ihe ihe bụ, gịnị's mkpa bụ n'ibu egosi dị ka tensile ike
Oge nzipu: Eprel 16-2024