Q245R thiab Q370R yog Suav (GB tus qauv) boiler thiab siab nkoj steel daim hlau, nrog cov lej qhia qhov tsawg kawg nkaus lub zog (245 MPa rau Q245R, 370 MPa rau Q370R) thiab 'R' qhia tias lawv yog rau cov hlab ntsha siab, sib txawv feem ntau hauv lub zog thiab tshuaj lom neeg muaj pes tsawg leeg, nrog Q3724R cov xwm txheej ntau dua weldability / nqi, siv rau tso tsheb hlau luam, tshav kub exchangers, thiab cov khoom siv.
Q245R Tshuaj muaj pes tsawg leeg ntawm cov khoom tsom xam ntawm qib
|
Qib |
C % |
Si% |
Mn% |
Cu% |
Ni% |
Cr% |
Mo % |
V % |
|
Q245R |
0.20 |
0.35 |
0.5-1.10 |
0.30 |
0.30 |
0.30 |
0.08 |
0.05 |
|
Ti % |
Alt% |
P % |
S % |
Nb |
|
|
|
|
|
0.03 |
0.02 |
0.025 |
0.01 |
0.05 |
|
|
|
Q370R Tshuaj muaj pes tsawg leeg% ntawm cov khoom tsom xam ntawm qib
|
Qib |
C % |
Si% |
Mn% |
Cu% |
Ni% |
Cr% |
Mo % |
V % |
|
Q370R |
0.18 |
0.55 |
1.2-.1.7 |
0.3 |
0.3 |
0.3 |
0.08 |
0.05 |
|
Ti % |
Alt% |
P % |
S % |
Nb |
|
|
|
|
|
0.03 |
0.02 |
0.025 |
0.010 |
0.015-0.05 |
|
|
|
Q245R Mechanical Property
|
Qib |
Thickness (hli) |
Min Yield |
Tensile |
Elongation |
Min Impact Zog |
|
|
|
|
|
|
|
Qib |
Min J |
|
Q245R |
3-16 |
245 Mpa |
400-520 Mpa |
25% |
0 |
34J |
|
16-36 |
235mpa ua |
400-520 Mpa |
25% |
0 |
34J |
|
|
36-60 |
225 Mpa ua |
400-520 Mpa |
25% |
0 |
34J |
|
|
60-100 |
205 Mpa ua |
390-510 Mpa |
24% |
0 |
34J |
|
|
100-150 |
185mpa ua |
380-500 Mpa |
24% |
0 |
34J |
|
|
150-250 |
175mpa ua |
370-490 Mpa |
24% |
0 |
34J |
|
Q370R Mechanical Property
|
Qib |
Thickness (hli) |
Min Yield |
Tensile |
Elongation |
Min Impact Zog |
|
|
|
|
|
|
|
Qib |
Min J |
|
Q370R |
10-16 |
370 Mpa |
530-630 Mpa |
20% |
-20 |
47J |
|
16-36 |
360 Mpa ua |
530-630 Mpa |
20% |
-20 |
47J |
|
|
36-60 |
340mpa ua |
520-620 Mpa |
20% |
-20 |
47J |
|
|
60-100 |
330mpa ua |
510-610 Mpa |
20% |
-20 |
47J |
|
Qhov tseem ceeb sib txawv & yam ntxwv
Lub zog: Q370R yog siab dua - steel zog dua Q245R; Q370R muaj qhov tsawg kawg nkaus tawm lub zog ntawm 370 MPa, thaum Q245R muaj 245 MPa.
Muaj pes tsawg leeg: Q370R muaj ntau Manganese (Mn) thiab ntxiv Niobium (Nb) rau kev txhim kho lub zog thiab tawv, ua rau nws haum rau siab dua thiab kub.
Daim ntaub ntawv: Ob leeg yog siv rau hauv boilers, siab hlab ntsha, thiab tshav kub exchangers, tab sis Q370R tuav ntau xav tau kev tsim, thaum Q245R muaj zoo weldability thiab nqi -effectiveness rau tsawg dua cov kev cai.
Cov Qauv: Lawv ua raws li Tuam Tshoj tus qauv GB713.
