Company name: Wuyang iron and Steel Co., Ltd.
Contact: Chen Jie
Cell phone number: 15617588651
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WSD690E plate (process execution of the technical conditions for the KTZ305-2016) 1 Scope: this specification provides for Volvo steel plate with a thickness of WSD690E 8mm-50mm - shape - size allowable deviation - technical requirements, test methods, inspection rules and quality certificates and other marks. The 2 grade is WSD690E., and the quality grade symbol is E, which represents -40C degree impact test temperature. 3 size • shape • weight and allowable deviation 3.1 steel plate size • shape and allowable deviation should comply with the provisions of GB/T709 - 2006. The thickness deviation of the 3.2 steel plate shall be in accordance with the C class deviation in GB/T709-2006 6.1.3. The weight of 3.3 steel plate is calculated according to theoretical weight. Theoretical weight the thickness of plate thickness and allow small thickness of the arithmetic mean, the density of steel 7.85g/cm fand.4 technology 4.1 grade and chemical form (melting analysis) should meet the specification in table 1. Chemical composition of 1WSD690E steel (melting analysis) wt%, provisions of chemical composition CSiMnpsvCrNiCuMoBWSD690E = 0.18 = 0.5 = 1.5 = 0.02 = 0.01 = 0.08 = 0.8 = 1.5 = 0.5 = 0.6 = 0.005A finished steel plate should be consistent with the allowable deviation of GB/T2222. B smelting carbon equivalent Ceq = 0.53%. Melting crack sensitive coefficient PCM = 0.30%. Ceq (%) =C+Mn/6+Si/24+Ni/40+Cr/5+Mo/4+V/14 Pcm (%) =C+Si/30+Mn/20+Cu/20+Ni60+Cr/20+Mo/15+V/15+v/10+5B 4.2 should be handled by the vacuum smelting method just 4.3 delivery state plates should be state delivery to heat quenching and tempering treatment. 4.4 the mechanical properties and technological properties of WSD690E steel plate should comply with the provisions of Table 2 in the delivery state of mechanical properties and technological properties. Table 2WSD690E Rpo.2 Rm A V thickness of Charpy impact energy of 180 DEG bending experimental thickness (Mpa) (Mpa) (%) KV2 (horizontal) /J d= bend diameter thickness -40 a= C 8-50 = 680770-940 = 14 sample thickness more than 47 d=3a A (V 47J C B steel Charpy experiment according to table 2 shall be cold there are cracks. 4.5 ultrasonic inspection steel plate should be followed by 100% JB4730.3, should comply with I class 4.6 surface quality, steel plate surface shall not have bubble, crack, crack, folding, inclusion and pressing into the oxide scale. Steel plate shall not be layered. The steel surface allows - - Scratch indentation and other local defects of thin iron oxide rust - - does not interfere with the inspection of surface defects caused by pressing iron oxide off the rough surface, but the depth from the surface defects of steel plate steel plate allows real grinding processing, but should ensure that the small thickness, repair should be smooth without edges. 55.2 test method: each batch of steel plate inspection items • sampling quantity • sampling method and experimental method conform to the provisions of table 3. 5.3 steel plate with thickness greater than 40mmm, the impact test axis should be located at 1/4 of the plate thickness. 5.4 (Charpy V notch impact test results), does not comply with the provisions of article 4.4 of the 3 samples from the same plate and then carries on the experiment, the two groups before and after the 6 samples are only allowed to have 1 samples is less than the specified value, but does not allow for less than a prescribed value 70%. 5.5 other experimental projects of reinspection shall be packed, mark and quality certificate number method according to sampling method test GB/T17505-1998 the provisions of Table 3 experimental methods 1 sampling inspection project smelting chemical analysis 1/ GB/T2006 GB/T223 of each furnace tank number GB/T4336 2 GB/T228.1 3 1/ tensile each batch of each batch of GB/T2975 GB/T232 4 1/ cold shock 3/ of each batch of GB/T229 5 ultrasonic flaw detection by one by one surface 6 / JB/T4730.3 / visual and measuring 7 dimensions shape one by one / the right tools - 6 packaging marking and certification plate should be consistent with GB/T247-2008.
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