CN111471930A - 一种钢管高强度耐腐蚀的加工工艺 - Google Patents
一种钢管高强度耐腐蚀的加工工艺 Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 104
- 239000010959 steel Substances 0.000 title claims abstract description 104
- 238000005260 corrosion Methods 0.000 title claims abstract description 37
- 230000007797 corrosion Effects 0.000 title claims abstract description 37
- 238000003754 machining Methods 0.000 title description 2
- 238000001816 cooling Methods 0.000 claims abstract description 69
- 238000010438 heat treatment Methods 0.000 claims abstract description 49
- 239000011248 coating agent Substances 0.000 claims abstract description 19
- 238000000576 coating method Methods 0.000 claims abstract description 19
- 238000005516 engineering process Methods 0.000 claims abstract description 16
- 238000005098 hot rolling Methods 0.000 claims abstract description 16
- 238000004080 punching Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 7
- 239000010703 silicon Substances 0.000 claims abstract description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 6
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims abstract description 6
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 claims abstract description 6
- 239000000446 fuel Substances 0.000 claims abstract description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 6
- 239000001257 hydrogen Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 10
- 238000004513 sizing Methods 0.000 claims description 10
- 239000011651 chromium Substances 0.000 claims description 6
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 238000000137 annealing Methods 0.000 claims description 5
- 239000002518 antifoaming agent Substances 0.000 claims description 5
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 5
- 239000000292 calcium oxide Substances 0.000 claims description 5
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 5
- 239000004917 carbon fiber Substances 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 239000013078 crystal Substances 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 5
- 239000005543 nano-size silicon particle Substances 0.000 claims description 5
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 5
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 5
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 5
- 235000012239 silicon dioxide Nutrition 0.000 claims description 5
- 238000005496 tempering Methods 0.000 claims description 5
- 239000010936 titanium Substances 0.000 claims description 5
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052750 molybdenum Inorganic materials 0.000 abstract description 2
- 239000011733 molybdenum Substances 0.000 abstract description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052721 tungsten Inorganic materials 0.000 abstract description 2
- 239000010937 tungsten Substances 0.000 abstract description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
本发明涉及钢管加工相关领域,具体公开了一种钢管高强度耐腐蚀的加工工艺,包括如下步骤:S1、将钢管坯料置于加热炉中加热,加热温度为1000‑1250℃,燃料为氢气或乙炔;S2、将步骤S1中加热完成的坯料通过穿孔设备进行热轧穿孔,得到管坯;S3、将步骤S2中的管坯采用压缩空气以5‑7℃/s的冷却速率将管坯冷至610‑620℃,然后再采用水冷以14‑17℃/s的冷却速率将管坯冷至350‑360℃,再采用风冷6‑9℃/s的冷却速率将板管坯至室温;S4、将步骤S3中冷却后的管坯在真空度为5×10‑3Pa的条件下,以260℃的温度加热30‑40min,并保温45‑55min后随炉冷却,在钢管表面涂有一层耐腐蚀涂层,提高了钢管的耐腐蚀能力,在配料中添加硅和钼、铬、钨等结合,提高了钢管的抗腐蚀性和抗氧化性。
Description
技术领域
本发明涉及钢管加工相关领域,具体为一种钢管高强度耐腐蚀的加工工艺。
背景技术
钢管具有空心截面,其长度远大于直径或周长的钢材,按截面形状分为圆形、方形、矩形和异形钢管。随着生产技术不断进步,对钢管的质量要求越来越高,现有的钢管的强度和耐腐蚀性能一般,降低了钢管的质量,就会导致了钢管的使用寿命有限。
发明内容
本发明的目的在于提供一种钢管高强度耐腐蚀的加工工艺,以解决上述背景技术中提出的问题。
为实现上述目的,本发明提供如下技术方案:
一种钢管高强度耐腐蚀的加工工艺,包括如下步骤:
S1、将钢管坯料置于加热炉中加热,加热温度为1000-1250℃,燃料为氢气或乙炔;
S2、将步骤S1中加热完成的坯料通过穿孔设备进行热轧穿孔,得到管坯;
S3、将步骤S2中的管坯采用压缩空气以5-7℃/s的冷却速率将管坯冷至610-620℃, 然后再采用水冷以14-17℃/s的冷却速率将管坯冷至350-360℃,再采用风冷6-9℃/s的冷却速率将管坯冷却至室温;
S4、将步骤S3中冷却后的管坯在真空度为 5×10-3Pa的条件下,以260℃的温度加热30-40min,并保温45-55min后随炉冷却,将钢管进行预加热处理,再将加热后的钢管在温度为860-900℃下进行热轧加工,再通过球化退火工艺加热到820-840℃,保温5-7h,然后关闭炉子,随炉冷却到600-550℃左右,出炉空冷;
S5、将步骤S4中的钢管通过低温回火工艺加热到180-185℃,保温2-4h,出炉空冷;
S6、按规格要求采用定径机对步骤S5中的管坯进行定径,然后使定径后的钢管自然冷却,再采用矫直机对钢管进行整形;
S7、在步骤S6中的钢管外壁涂覆耐腐蚀涂层,进行烘干,然后根据长短要求,对钢管进行分段;
作为本发明的一种优选技术方案,步骤S1中的钢管坯料按重量百分比计成分为:C:0.38-0.56、Si:0.15-0.21、Mn:0.9-1.3、V:0.05-0.12、Mo:0.13-0.26、Cu:0.02-0.04、Cr:0.05-0.07、Ti:0.003-0.007、B:0.003-0.004、Ni:0.26-0.35、W:0.08-0.12、Mg:0.12-0.2、Co:0.002-0.004、N:0.002-0.005、P:0.001-0.002、S:0.001-0.002、其余为Fe。
作为本发明的一种优选技术方案,步骤S2中的热轧穿孔的温度为1160-1180℃。
作为本发明的一种优选技术方案,步骤S3中将管坯冷至610-620℃时,保温30-40min,将管坯冷至350-360℃时,保温1-1.5h。
作为本发明的一种优选技术方案,步骤S4预加热处理为:将冷却后的钢管以24-26℃/s速度加热到650-670℃,保温35-45min,再以21-23℃/s速度加热到920-940℃,保温0.5-1h。
作为本发明的一种优选技术方案,步骤S4中进行热轧加工的时间为1-1.5h。
作为本发明的一种优选技术方案,步骤S7中的耐腐蚀涂层由下列重量份的原料制成:有机硅树脂2-4份、碳化硅微粉0.8-1.2份、氧化钙4-6份、细晶氧化铝0.6-0.9份、三氧化二铬4-8份、纳米二氧化钛0.5-1份、纳米二氧化硅0.4-0.7份、碳纤维粉0.2-0.6份、消泡剂0.1-0.3份、固化剂0.1-0.2份、粘接剂0.05-0.1份、去离子水4-7份。
与现有技术相比,本发明的有益效果是:在钢管表面涂有一层耐腐蚀涂层,提高了钢管的耐腐蚀能力,在配料中添加硅和钼、铬、钨等结合,提高了钢管的抗腐蚀性和抗氧化;添加锰、镁等金属元素,增加了钢管的强度,本发明制备的钢管具有较高的强度和良好的耐腐蚀性能,延长了钢管的使用寿命。
具体实施方式
下面对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
实施例1:一种钢管高强度耐腐蚀的加工工艺,包括如下步骤:
S1、将钢管坯料置于加热炉中加热,加热温度为1000-1250℃,燃料为氢气或乙炔;
S2、将步骤S1中加热完成的坯料通过穿孔设备进行热轧穿孔,得到管坯;
S3、将步骤S2中的管坯采用压缩空气以5-7℃/s的冷却速率将管坯冷至610-620℃, 然后再采用水冷以14-17℃/s的冷却速率将管坯冷至350-360℃,再采用风冷6-9℃/s的冷却速率将管坯冷却至室温;
S4、将步骤S3中冷却后的管坯在真空度为 5×10-3Pa的条件下,以260℃的温度加热30-40min,并保温45-55min后随炉冷却,将钢管进行预加热处理,再将加热后的钢管在温度为860-900℃下进行热轧加工,再通过球化退火工艺加热到820-840℃,保温5-7h,然后关闭炉子,随炉冷却到600-550℃左右,出炉空冷;
S5、将步骤S4中的钢管通过低温回火工艺加热到180-185℃,保温2-4h,出炉空冷;
S6、按规格要求采用定径机对步骤S5中的管坯进行定径,然后使定径后的钢管自然冷却,再采用矫直机对钢管进行整形;
S7、在步骤S6中的钢管外壁涂覆耐腐蚀涂层,进行烘干,然后根据长短要求,对钢管进行分段;
进一步的,步骤S1中的钢管坯料按重量百分比计成分为:C:0.38、Si:0.15、Mn:0.9、V:0.05、Mo:0.13、Cu:0.02、Cr:0.05、Ti:0.003、B:0.003、Ni:0.26-0.35、W:0.08、Mg:0.12、Co:0.002、N:0.002、P:0.001、S:0.001、其余为Fe。
进一步的,步骤S2中的热轧穿孔的温度为1160-1180℃。
进一步的,步骤S3中将管坯冷至610-620℃时,保温30-40min,将管坯冷至350-360℃时,保温1-1.5h。
进一步的,步骤S4预加热处理为:将冷却后的钢管以24-26℃/s速度加热到650-670℃,保温35-45min,再以21-23℃/s速度加热到920-940℃,保温0.5-1h。
进一步的,步骤S4中进行热轧加工的时间为1-1.5h。
进一步的,步骤S7中的耐腐蚀涂层由下列重量份的原料制成:有机硅树脂2份、碳化硅微粉0.8份、氧化钙4份、细晶氧化铝0.6份、三氧化二铬4份、纳米二氧化钛0.5份、纳米二氧化硅0.4份、碳纤维粉0.2份、消泡剂0.1份、固化剂0.1份、粘接剂0.05份、去离子水4份。
实施例2:一种钢管高强度耐腐蚀的加工工艺,包括如下步骤:
S1、将钢管坯料置于加热炉中加热,加热温度为1000-1250℃,燃料为氢气或乙炔;
S2、将步骤S1中加热完成的坯料通过穿孔设备进行热轧穿孔,得到管坯;
S3、将步骤S2中的管坯采用压缩空气以5-7℃/s的冷却速率将管坯冷至610-620℃, 然后再采用水冷以14-17℃/s的冷却速率将管坯冷至350-360℃,再采用风冷6-9℃/s的冷却速率将管坯冷却至室温;
S4、将步骤S3中冷却后的管坯在真空度为 5×10-3Pa的条件下,以260℃的温度加热30-40min,并保温45-55min后随炉冷却,将钢管进行预加热处理,再将加热后的钢管在温度为860-900℃下进行热轧加工,再通过球化退火工艺加热到820-840℃,保温5-7h,然后关闭炉子,随炉冷却到600-550℃左右,出炉空冷;
S5、将步骤S4中的钢管通过低温回火工艺加热到180-185℃,保温2-4h,出炉空冷;
S6、按规格要求采用定径机对步骤S5中的管坯进行定径,然后使定径后的钢管自然冷却,再采用矫直机对钢管进行整形;
S7、在步骤S6中的钢管外壁涂覆耐腐蚀涂层,进行烘干,然后根据长短要求,对钢管进行分段;
进一步的,步骤S1中的钢管坯料按重量百分比计成分为:C:0.44、Si:0.19、Mn:1、V:0.09、Mo:0.2、Cu:0.03、Cr:0.06、Ti:0.005、B:0.003、Ni:0.3、W:0.1、Mg:0.18、Co:0.003、N:0.004、P:0.001、S:0.002、其余为Fe。
进一步的,步骤S2中的热轧穿孔的温度为1160-1180℃。
进一步的,步骤S3中将管坯冷至610-620℃时,保温30-40min,将管坯冷至350-360℃时,保温1-1.5h。
进一步的,步骤S4预加热处理为:将冷却后的钢管以24-26℃/s速度加热到650-670℃,保温35-45min,再以21-23℃/s速度加热到920-940℃,保温0.5-1h。
进一步的,步骤S4中进行热轧加工的时间为1-1.5h。
进一步的,步骤S7中的耐腐蚀涂层由下列重量份的原料制成:有机硅树脂3份、碳化硅微粉1份、氧化钙5份、细晶氧化铝0.7份、三氧化二铬6份、纳米二氧化钛0.8份、纳米二氧化硅0.6份、碳纤维粉0.4份、消泡剂0.2份、固化剂0.1份、粘接剂0.09份、去离子水5份。
相比较实施例1,实施例2制备的钢管的强度和耐腐蚀性能均有所提升。
实施例3:一种钢管高强度耐腐蚀的加工工艺,包括如下步骤:
S1、将钢管坯料置于加热炉中加热,加热温度为1000-1250℃,燃料为氢气或乙炔;
S2、将步骤S1中加热完成的坯料通过穿孔设备进行热轧穿孔,得到管坯;
S3、将步骤S2中的管坯采用压缩空气以5-7℃/s的冷却速率将管坯冷至610-620℃, 然后再采用水冷以14-17℃/s的冷却速率将管坯冷至350-360℃,再采用风冷6-9℃/s的冷却速率将管坯冷却至室温;
S4、将步骤S3中冷却后的管坯在真空度为 5×10-3Pa的条件下,以260℃的温度加热30-40min,并保温45-55min后随炉冷却,将钢管进行预加热处理,再将加热后的钢管在温度为860-900℃下进行热轧加工,再通过球化退火工艺加热到820-840℃,保温5-7h,然后关闭炉子,随炉冷却到600-550℃左右,出炉空冷;
S5、将步骤S4中的钢管通过低温回火工艺加热到180-185℃,保温2-4h,出炉空冷;
S6、按规格要求采用定径机对步骤S5中的管坯进行定径,然后使定径后的钢管自然冷却,再采用矫直机对钢管进行整形;
S7、在步骤S6中的钢管外壁涂覆耐腐蚀涂层,进行烘干,然后根据长短要求,对钢管进行分段;
进一步的,步骤S1中的钢管坯料按重量百分比计成分为:C:0.56、Si:0.21、Mn:1.3、V:0.12、Mo:0.26、Cu:0.04、Cr:0.07、Ti:0.007、B:0.004、Ni:0.35、W:0.12、Mg:0.2、Co:0.004、N:0.005、P:0.002、S:0.001、其余为Fe。
进一步的,步骤S2中的热轧穿孔的温度为1160-1180℃。
进一步的,步骤S3中将管坯冷至610-620℃时,保温30-40min,将管坯冷至350-360℃时,保温1-1.5h。
进一步的,步骤S4预加热处理为:将冷却后的钢管以24-26℃/s速度加热到650-670℃,保温35-45min,再以21-23℃/s速度加热到920-940℃,保温0.5-1h。
进一步的,步骤S4中进行热轧加工的时间为1-1.5h。
进一步的,步骤S7中的耐腐蚀涂层由下列重量份的原料制成:有机硅树脂4份、碳化硅微粉1.2份、氧化钙6份、细晶氧化铝0.9份、三氧化二铬8份、纳米二氧化钛1份、纳米二氧化硅0.7份、碳纤维粉0.6份、消泡剂0.3份、固化剂0.2份、粘接剂0.1份、去离子水7份。
相比较实施例1和2,实施例3制备的钢管的强度和耐腐蚀性能均有所提升。
尽管已经示出和描述了本发明的实施例,对于本领域的普通技术人员而言,可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型,本发明的范围由所附权利要求及其等同物限定。
Claims (7)
1.一种钢管高强度耐腐蚀的加工工艺,其特征在于:包括如下步骤:
S1、将钢管坯料置于加热炉中加热,加热温度为1000-1250℃,燃料为氢气或乙炔;
S2、将步骤S1中加热完成的坯料通过穿孔设备进行热轧穿孔,得到管坯;
S3、将步骤S2中的管坯采用压缩空气以5-7℃/s的冷却速率将管坯冷至610-620℃, 然后再采用水冷以14-17℃/s的冷却速率将管坯冷至350-360℃,再采用风冷6-9℃/s的冷却速率将管坯冷却至室温;
S4、将步骤S3中冷却后的管坯在真空度为 5×10-3Pa的条件下,以260℃的温度加热30-40min,并保温45-55min后随炉冷却,将钢管进行预加热处理,再将加热后的钢管在温度为860-900℃下进行热轧加工,再通过球化退火工艺加热到820-840℃,保温5-7h,然后关闭炉子,随炉冷却到600-550℃左右,出炉空冷;
S5、将步骤S4中的钢管通过低温回火工艺加热到180-185℃,保温2-4h,出炉空冷;
S6、按规格要求采用定径机对步骤S5中的管坯进行定径,然后使定径后的钢管自然冷却,再采用矫直机对钢管进行整形;
S7、在步骤S6中的钢管外壁涂覆耐腐蚀涂层,进行烘干,然后根据长短要求,对钢管进行分段。
2.根据权利要求1所述的一种钢管高强度耐腐蚀的加工工艺,其特征在于:步骤S1中的钢管坯料按重量百分比计成分为:C:0.38-0.56、Si:0.15-0.21、Mn:0.9-1.3、V:0.05-0.12、Mo:0.13-0.26、Cu:0.02-0.04、Cr:0.05-0.07、Ti:0.003-0.007、B:0.003-0.004、Ni:0.26-0.35、W:0.08-0.12、Mg:0.12-0.2、Co:0.002-0.004、N:0.002-0.005、P:0.001-0.002、S:0.001-0.002、其余为Fe。
3.根据权利要求1所述的一种钢管高强度耐腐蚀的加工工艺,其特征在于:步骤S2中的热轧穿孔的温度为1160-1180℃。
4.根据权利要求1所述的一种钢管高强度耐腐蚀的加工工艺,其特征在于:步骤S3中将管坯冷至610-620℃时,保温30-40min,将管坯冷至350-360℃时,保温1-1.5h。
5.根据权利要求1所述的一种钢管高强度耐腐蚀的加工工艺,其特征在于:步骤S4预加热处理为:将冷却后的钢管以24-26℃/s速度加热到650-670℃,保温35-45min,再以21-23℃/s速度加热到920-940℃,保温0.5-1h。
6.根据权利要求1所述的一种钢管高强度耐腐蚀的加工工艺,其特征在于:步骤S4中进行热轧加工的时间为1-1.5h。
7.根据权利要求1所述的一种钢管高强度耐腐蚀的加工工艺,其特征在于:步骤S7中的耐腐蚀涂层由下列重量份的原料制成:有机硅树脂2-4份、碳化硅微粉0.8-1.2份、氧化钙4-6份、细晶氧化铝0.6-0.9份、三氧化二铬4-8份、纳米二氧化钛0.5-1份、纳米二氧化硅0.4-0.7份、碳纤维粉0.2-0.6份、消泡剂0.1-0.3份、固化剂0.1-0.2份、粘接剂0.05-0.1份、去离子水4-7份。
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