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XG has been very experienced in high strength quenched super heavy used for boiler vessels, now it has developed series of High strength-600MPa grade- quenched CF plates for boiler. Thickness meets up to150mm and properties have reached world level standards, and shock temperature meets -20°C,-40°C and -50°C. This complies to construction of spherical tank and hydropower station, and all kinds of boilers, tanks, vessels.
One of the typical CF plates is 150mm 07MnMoVR
150mm 07MnMoVR (CF Steel)
150mm CF Steel Plates for Guanzhou Hydropower station
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124~150mm 07MnMoVR testing analysis |
|
|
TIME |
PALTE NO. |
Variety |
Dimensions |
Remark |
Procedure |
Sample
location |
Tensile |
Impact |
|
|
Yield |
tensile |
Stretch |
-20°C |
|
|
Nov.2011 |
1B15M131-1 |
07MnMoVR |
150 |
Ingot |
Quenched |
1/4
thickness |
771 |
840 |
18.1 |
200 |
177 |
177 |
|
|
1B15M131-2 |
150 |
Ingot |
Quenched |
1/4
thickness |
699 |
768.4 |
18.63 |
159 |
175 |
224 |
|
|
1B15M131-3 |
150 |
Ingot |
Quenched |
1/4
thickness |
600 |
686.2 |
22.4 |
213 |
296 |
251 |
|
|
1B15M141-1 |
124 |
Ingot |
Quenched |
1/4
thickness |
745 |
822.1 |
16.74 |
117 |
149 |
120 |
|
|
1B15M141-2 |
124 |
Ingot |
Quenched |
1/4
thickness |
703 |
768.5 |
16.72 |
169 |
183 |
182 |
|
|
1B15M141-3 |
124 |
Ingot |
Quenched |
1/4
thickness |
586 |
671.7 |
19.45 |
182 |
190 |
232 |
|
|
1B15M151-1 |
|
|
150 |
Ingot |
Quenched |
1/4
thickness |
657 |
760.2 |
17.62 |
139 |
98 |
54 |
|
|
1B15M151-2 |
150 |
Ingot |
Quenched |
1/4
thickness |
652 |
729.3 |
17.36 |
177 |
168 |
173 |
|
|
1B15M151-3 |
|
|
150 |
Ingot |
Quenched |
1/4
thickness |
575 |
665.8 |
22.75 |
220 |
198 |
196 |
|
150mm 07MnMoVR (CF Steel) mechanical properties
Z-direction performance of 124/150mm plates for Guanzhou Hydropower Station
|
124~150mm 07MnMoVRZ35 performance |
|
Plate number |
Varuety |
Dimensions |
Sample
location |
Z-direction tensile |
|
1B15M131 |
07MnMoVR |
150 |
1/4 thickness |
50 |
48 |
48 |
|
1B15M151 |
07MnMoVR |
150 |
1/2 thickness |
54 |
58 |
53 |
|
1B15M142 |
07MnMoVR |
124 |
1/4 thickness |
61 |
65 |
63 |
|
1B15M141 |
07MnMoVR |
124 |
1/2 thickness |
58 |
61 |
62 |
124mm CF Plate Welding Test
With the increasing of welding energy within the scope of 15-41KJ/cm, no change of tensile strength happens on welding joints. No obvious decreases on impact toughness under room temperature and low temperature. There is decrease of impact toughness in the weld temperature affected zone. So it‘s very important to control the welding heat input. When the welding energy is controlled within the scope of 15-41KJ/cm, the strength and toughness of welding joints meet needs the standards. Following form shows the welding mechanics and impact performance:
Mechanics performance test results on welding joints under different welding procedure
|
Sample |
welding heat input KJ/cm |
Rm |
Fracture location |
Bending diameter |
Holder pitch |
Bending angle |
Side bending |
|
number |
MPa |
mm |
mm |
|
A11 |
18 |
665,665 |
Base metal-weld centre |
40 |
63 |
180 |
Qualified |
|
A12 |
28 |
660,660 |
Base metal-base metal |
40 |
63 |
180 |
Qualified |
|
A13 |
38 |
660,665 |
Weld centre-weld centre |
40 |
63 |
180 |
Qualified |
|
A21 |
33 |
665,665 |
Weld centre-weld centre |
40 |
63 |
180 |
Qualified |
Test results on weld joints under different welding procedure
|
Weld energy |
Gap location |
Temperature(°C) |
KV2(J) |
|
15~20KJ/cm |
Weld center |
Normal |
193,199,207(200) |
|
-50 |
142,119,141(134) |
|
Heat-affecting zone |
Normal |
269,279,262(270) |
|
-50 |
217,161,189(189) |
|
25~30KJ/cm |
Weld center |
Normal |
214,190,199(201) |
|
-50 |
103,110,117(110) |
|
Heat-affecting zone |
Normal |
308,303,323(312) |
|
-50 |
279,221,186(229) |
|
30~35KJ/cm |
Weld center |
Normal |
236,220,226(227) |
|
-50 |
83,74,127(95) |
|
Heat-affecting zone |
Normal |
260,292,280(277) |
|
-50 |
168,212,193(191) |
|
35~41KJ/cm |
Weld center |
Normal |
209,183,194(195) |
|
-50 |
128,91,89(103) |
|
Heat-affecting zone |
Normal |
248,295,225(256) |
|
-50 |
147,189,138(158) |
Mechanics performance of 60mm XDB620 plate
|
Number |
Stretching mode |
Rp0.2
(σs)Mpa |
Rm
(σb)MPa |
A
(δ)% |
|
1 |
Horizontal pull |
567 |
678 |
26.2 |
|
Vertical pull |
546 |
659 |
25.7 |
|
2 |
Horizontal pull |
585 |
691 |
25.9 |
|
Vertical pull |
559 |
671 |
24.4 |
|
3 |
Horizontal pull |
561 |
682 |
24.5 |
|
Vertical pull |
548 |
652 |
23.6 |
|
4 |
Horizontal pull |
578 |
693 |
25.5 |
|
Vertical pull |
559 |
677 |
24.7 |
|
5 |
Horizontal pull |
580 |
689 |
25.9 |
|
Vertical pull |
555 |
672 |
25.3 |
Impact performance of 60mm XDB620 plate
|
No. |
20°C(J) |
0°C(J) |
-10°C(J) |
-20°C(J) |
|
1 |
300 |
300 |
297 |
310 |
317 |
322 |
299 |
308 |
311 |
297 |
285 |
284 |
|
2 |
351 |
317 |
328 |
320 |
316 |
315 |
309 |
315 |
319 |
304 |
309 |
294 |
|
3 |
302 |
335 |
305 |
306 |
319 |
314 |
308 |
319 |
307 |
293 |
301 |
309 |
|
4 |
296 |
297 |
301 |
321 |
300 |
293 |
294 |
308 |
294 |
283 |
306 |
313 |
|
5 |
301 |
284 |
274 |
299 |
298 |
299 |
301 |
304 |
302 |
307 |
294 |
299 |
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No. |
-30 °C(J) |
-40 °C(J) |
-60 °C(J) |
-80 °C(J) |
|
1 |
315 |
310 |
295 |
199 |
310 |
307 |
312 |
312 |
299 |
284 |
210 |
320 |
|
2 |
286 |
271 |
260 |
319 |
279 |
306 |
287 |
300 |
279 |
232 |
188 |
255 |
|
3 |
278 |
245 |
210 |
298 |
336 |
317 |
300 |
299 |
288 |
191 |
295 |
306 |
|
4 |
318 |
301 |
290 |
327 |
313 |
313 |
323 |
300 |
312 |
156 |
156 |
16 |
|
5 |
321 |
294 |
265 |
320 |
308 |
320 |
289 |
299 |
303 |
311 |
295 |
281 |
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