Q345C obere okpomọkụ ígwè anwụrụ ezi ntụpọ
Ọkwa mgbidi ọkpụrụkpụ mm elongation δ 5 ≥%% ike δ S (MPA ≥) ule okpomọkụ ℃
Q345A ≤ 16 21 345 achọghị
Q345B ≤16 21 345 20
Q345C 16-35 22 ≥325 0
Ọkwa C Si Mn PSV NB Al Ti
Q345A ≤0.20 ≤0.55 ≤1.70 ≤0.045 ≤0.045 0.02-0.15 0.015-0.060 0.02-0.20
Q345B ≤0.20 ≤0.55 ≤1.70 ≤0.040 ≤0.040 0.02-0.15 0.015-0.060 0.02-0.20
Q345C ≤0.20 ≤0.55 ≤1.70 ≤0.035 ≤0.035 0.02-0.15 0.015-0.060 ≥0.015 0.02-0.20
Ọ bụ n'ihi ọdịnaya carbon na manganese dị iche iche:
Q235-A
Ọdịnaya carbon C: 0.14 ~ 0.22; Ọnụ: 0.30 ~ 0.65;
Q235-B
Ọdịnaya carbon C: 0.12 ~ 0.20; Ọnụ: 0.30 ~ 0.70;
A na-etinye ya na akụkụ carburized ma ọ bụ cyanide nwere obere ike chọrọ, dị ka mkpanaka ịdọrọ, mkpanaka njikọ, nko, bolt, shaft na weldment.
Ekwesịrị inwe mgbochi na okpomọkụ!
Karịsịa Q345E. Ọtụtụ iri ogo n'okpuru efu.
Na mgbakwunye, ma e jiri ya tụnyere ọkọlọtọ ochie, ihe kacha pụta ìhè nke ọkọlọtọ ọhụrụ bụ imezi ọdịnaya Mn na ígwè site na 1.0-1.60 ruo ≤ 1.70, ma kagbuo njedebe kacha nta nke ≥ 1.0.
Q345C ígwè ọkpọkọ bụ otu n'ime ihe nke ígwè ọkpọkọ.
Q345A, Q345B, Q345C, Q345D na Q345E bụ akara ule. Ha na-abawanye site na a ka e, tumadi n'ihi ọdịiche dị na mmetụta okpomọkụ kpatara dị iche iche ọdịnaya nke micro ọcha dị ka phosphorus na sọlfọ, nke na-anọchi anya ihe dị iche na mmetụta okpomọkụ na n'ibu Njirimara nke ọkpọkọ chemical mejupụtara.
Q345A, enweghị mmetụta; Q345B, 20 Celsius nkịtị mmetụta okpomọkụ; Q345C, mmetụta ogo 0; Q345D, bụ - mmetụta ogo 20; Q345E bụ - 40 ogo mmetụta. Na ọnọdụ okpomọkụ dị iche iche, ụkpụrụ mmetụta dị iche iche.
Q ike mkpụrụ adịghị ala karịa 345mp, ogo ogo na-egosikwa na ọ nwere ihe adịghị ọcha (carbon, manganese, silicon, sọlfọ na phosphorus). Bụ ọnụ ọgụgụ adịghị ọcha (ihe) na nchara. Mgbe emechara A, B, C na D, ọdịnaya adịghị ọcha na-ebelata
Q345A nwere ma phosphorus na sọlfọ erughị ma ọ bụ haha 0.045%
Q345B nwere ma phosphorus na sọlfọ erughị ma ọ bụ haha 0.040%
Q345C nwere ma phosphorus na sọlfọ erughị ma ọ bụ haha 0.035%
Q345D nwere ma phosphorus na sọlfọ erughị ma ọ bụ haha 0.030%
Q345E nwere ma phosphorus na sọlfọ erughị ma ọ bụ haha 0.025%
Ka phosphorus na sọlfọ na-adịghị ọcha na ígwè, na-akawanye njọ mmetụta siri ike
Q345A
Q345B Akv ọ bụghị ihe na-erughị 34 na 20 ℃
Na Q345C 0 ℃, Akv agaghị erughị 34
Q345D - Akv ọ bụghị ihe na-erughị 34 na 20 ℃
Na Q345E - 40 ℃, Akv abụghị ihe na-erughị 27
Ihe ikpeazụ kpatara ya bụ na Mbelata P na s adịghị ọcha na ígwè na-akwalite mmelite nke mmetụta siri ike na obere okpomọkụ. Otu bụ chemical mejupụtara nke Q345 na ndị ọzọ bụ n'ibu Njirimara nke Q345
C≤0.2%,Mn 1.0-1.6%
Si ≤0.55%,
S≤0.35%,
P ≤0.35%,
V 0.02-0.15%,
Nb 0.015-0.06%,
Nke 0.02-0.2%,
AL ≥0.015%
Njirimara igwe bụ:
Ike mpụta: ≥ 345mpa (ọkpụrụkpụ n'okpuru 16mm)
Ike nkwụsị: 470-630mpa
Mgbatị: 22%
Ike mmetụta: ≥ 34j (nnwale okpomọkụ 0 Celsius)
Nnwale gbagọọ 180 °:
D = 2A (ọkpụrụkpụ n'okpuru 16mm)
Ike mpụta: ≥ 345mpa (ọkpụrụkpụ n'okpuru 16mm)
Ike nkwụsị: 470-630mpa
Mgbatị: 22%
Ike mmetụta: ≥ 34j (nnwale okpomọkụ 0 Celsius)
Nnwale gbagọọ 180 °:
D = 2A (ọkpụrụkpụ n'okpuru 16mm)
