山锟絴锟斤拷锟斤拷鋼管的达拷锟斤拷
山锟絴锟斤拷锟斤拷鋼管的达拷锟斤拷[1](锟斤拷蜏卮嗷拷A锟斤拷)锟斤拷锟絞锟斤拷一锟斤拷锟斤拷锟紻(zhu锟斤拷n)锟斤拷锟截讹拷tc锟斤拷示锟斤拷锟竭硷拷锟紽(0.01%c)锟斤拷tc锟斤拷一100c锟斤拷锟斤拷锟节此溫度則锟斤拷全處锟节脆化锟斤拷B(t锟斤拷i)锟斤拷20#锟斤拷锟斤拷鋼管癸拷锟叫达拷锟斤拷锟(sh锟斤拷)锟较斤拷元锟截讹拷锟斤拷锟斤拷20#锟斤拷锟斤拷鋼癸拷锟斤拷锟絞锟斤拷一锟斤拷锟斤拷锟紻(zhu锟斤拷n)锟斤拷锟截度ｏ拷锟斤拷锟斤拷锟斤拷锟斤拷A锟斤拷锟斤拷锟斤拷锟揭滐拷锟斤拷锟斤拷锟絞锟皆旓拷锟窖時(sh锟斤拷)锟斤拷20#锟斤拷锟斤拷鋼管管的旓拷跒锟斤拷g锟紺锟酵旓拷锟锟斤拷锟斤拷锟节低滐拷锟铰达拷锟皆旓拷锟窖時(sh锟斤拷)锟斤拷锟斤拷锟斤拷锟锟斤拷20#锟斤拷锟斤拷鋼管管的低溫脆化锟斤拷原锟斤拷锟角ｏ拷
(1)锟斤拷變锟絩(sh锟斤拷)位锟絜(cu锟斤拷)源锟絘(ch锟斤拷n)锟斤拷锟斤拷位锟絜(cu锟斤拷)锟斤拷锟较礙锟斤拷(锟界晶锟界、锟节讹拷锟斤拷锟)锟斤拷锟斤拷锟絩(sh锟斤拷)锟斤拷锟街诧拷锟斤拷(y锟斤拷ng)锟斤拷锟斤拷锟絕35#锟斤拷锟斤拷鋼管管碉拷锟斤拷論锟斤拷(qi锟斤拷ng)锟饺讹拷锟絘(ch锟斤拷n)锟斤拷微锟窖紋锟斤拷
(2)锟阶傦拷(g锟斤拷)锟斤拷锟絜锟斤拷位锟絜(cu锟斤拷)锟节撅拷锟斤拷铣锟揭伙拷锟(g锟斤拷)微锟窖紋
(3)锟缴傦拷(g锟斤拷){110)锟斤拷锟狡庯拷锟洁交處锟斤拷锟斤拷(y锟斤拷ng)锟斤拷锟斤拷锟金不勶拷(d锟斤拷ng)位锟絜(cu锟斤拷)%26lt;010%26gt;锟斤拷锟斤拷楔锟斤拷微锟窖紋锟斤拷锟斤拷锟斤拷锟斤拷{100}锟斤拷锟斤拷锟斤拷锟斤拷锟絖锟斤拷锟斤拷
锟斤拷锟斤拷山锟絴锟斤拷锟斤拷鋼癸拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟叫ｏ拷
锟斤拷锟斤拷锟絚鋼的伙拷锟絎(xu锟斤拷)锟缴凤拷锟斤拷锟斤拷袏A锟絪锟酵氾拷锟絯锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟节讹拷锟斤拷锟絯锟斤拷锟斤拷試锟接尺达拷锟斤拷試锟(y锟斤拷n)锟截度★拷試锟(y锟斤拷n)锟絟(hu锟斤拷n)锟斤拷锟斤拷锟斤拷锟絛锟劫度碉拷锟斤拷锟斤拷锟斤拷锟絇(gu锟斤拷n)锟斤拷锟斤拷械锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷鋼的达拷锟皆★拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷鋼的筹拷锟截达拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷鋼碉拷锟斤拷锟斤拷锟锟斤拷锟斤拷械牡锟锟斤拷锟斤拷葰锟斤拷w也锟斤拷锟組(j锟斤拷n)鋼的达拷锟皆★拷锟斤拷锟斤拷锟斤拷锟教间摰锟斤拷{(l锟斤拷n)锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷院桶锟斤拷c(di锟斤拷n)锟斤拷锟斤拷械锟斤拷a锟斤拷锟絉锟斤拷锟斤拷锟皆拷锟斤拷@锟斤拷锟斤拷锟斤拷锟节回伙拷锟紹(t锟斤拷i)锟侥达拷锟斤拷锟斤拷锟紺锟斤拷锟锟斤拷鈮★拷锟锟斤拷锟絏锟斤拷元锟斤拷锟斤拷锟斤拷锟斤拷纬煞锟(w锟斤拷n)锟斤拷锟侥伙拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷(x锟斤拷)锟斤拷鋼的撅拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷鋼碉拷锟絞锟斤拷锟斤拷锟斤拷锟斤拷鋼的达拷锟斤拷锟斤拷稀锟斤拷元锟斤拷锟斤拷锟斤拷锟斤拷c锟叫猴拷元锟斤拷锟斤拷锟轿成伙拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷泻锟斤拷锟斤拷锟锟斤拷锟斤拷(y锟斤拷ng)锟斤拷锟斤拷锟斤拷锟斤拷锟锟斤拷鋼帮拷锟斤拷锟斤拷锟斤拷锟斤拷锟矫擄拷锟酵憋拷锟給(h锟斤拷)锟斤拷注锟饺达拷锟斤拷锟斤拷锟缴斤拷锟斤拷锟斤拷锟斤拷泻锟斤拷s锟絴(zh锟斤拷)锟酵氾拷锟絯锟斤拷锟斤拷锟斤拷锟斤拷锟酵成凤拷偏锟斤拷锟斤拷锟斤拷锟斤拷T锟斤拷M锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟紷些锟斤拷锟斤拷锟斤拷锟斤拷鋼碉拷锟絞锟斤拷锟斤拷锟斤拷锟斤拷鋼的达拷锟皆★拷
(1)锟斤拷锟杰忥拷(qi锟斤拷ng)锟斤拷元锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟絞锟斤拷一锟斤拷锟斤拷锟紻(zhu锟斤拷n)锟斤拷锟截讹拷锟筋強(qi锟斤拷ng)锟斤拷锟斤拷還锟斤拷锟絝锟斤拷鈦猴拷锟紺锟斤拷锟斤拷锟斤拷锟酵時(sh锟斤拷)影響诧拷锟斤拷锟斤拷锟斤拷锟斤拷邥r(sh锟斤拷)锟斤拷锟斤拷锟絞锟斤拷一锟斤拷锟斤拷锟紻(zhu锟斤拷n)锟斤拷锟截度碉拷元锟斤拷锟斤拷锟斤拷锟借、锟絫锟斤拷锟絶锟斤拷锟斤拷锟斤拷锟絞锟斤拷一锟斤拷锟斤拷锟紻(zhu锟斤拷n)锟斤拷锟截度碉拷锟斤拷鎳ｏ拷锟饺斤拷锟酵猴拷锟斤拷锟斤拷锟絞锟斤拷一锟斤拷锟斤拷锟紻(zhu锟斤拷n)锟斤拷锟截度碉拷锟斤拷锟絠锟斤拷
(2)锟轿成第讹拷锟斤拷锟皆拷锟锟斤拷锟皆第讹拷锟斤拷锟斤拷锟斤拷35#锟斤拷锟斤拷鋼管癸拷锟斤拷锟斤拷锟斤拷锟揭拷锟皆拷貫锟教硷拷锟斤拷S3锟斤拷锟斤拷鋼管癸拷锟斤拷碳锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷山锟絴锟斤拷锟斤拷鋼管癸拷锟斤拷锟斤拷锟斤拷w锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷平锟斤拷每锟斤拷锟斤拷1%锟斤拷锟斤拷w锟絯锟絜锟斤拷锟絞锟斤拷一锟斤拷锟斤拷锟紻(zhu锟斤拷n)锟斤拷锟截讹拷平锟斤拷锟斤拷锟斤拷2锟斤拷2锟芥。锟紻2锟斤拷锟紽锟斤拷锟絯一锟斤拷锟斤拷w锟斤拷锟教硷拷锟斤拷锟斤拷锟(du锟斤拷)锟斤拷锟皆碉拷影锟锟斤拷锟斤拷锟斤拷锟锟斤拷鈮猴拷锟紺锟斤拷微锟较斤拷元锟斤拷锟斤拷锟轿成忥拷散锟街诧拷锟侥碉拷锟斤拷锟斤拷锟教硷拷锟斤拷锟斤拷铮拷锟斤拷锟缴斤拷|锟斤拷锟斤拷鋼管管碉拷锟絞锟斤拷一锟斤拷锟斤拷锟紻(zhu锟斤拷n)锟斤拷锟截讹拷锟斤拷锟斤拷锟斤拷
(3)锟斤拷锟斤拷锟竭达拷影锟斤拷g锟斤拷一锟斤拷锟斤拷锟紻(zhu锟斤拷n)锟斤拷锟截度ｏ拷锟絊锟斤拷锟斤拷锟街伙拷锟斤拷锟絞锟斤拷一锟斤拷锟斤拷锟紻(zhu锟斤拷n)锟斤拷锟截讹拷锟斤拷锟竭★拷锟斤拷(x锟斤拷)锟斤拷锟斤拷锟斤拷锟絫锟斤拷锟酵撅拷锟斤拷鋼管管碉拷锟斤拷锟斤拷A锟斤拷锟斤拷锟紷锟角廣锟介應(y锟斤拷ng)锟矫的凤拷锟斤拷锟斤拷
锟斤拷锟斤拷冶锟斤拷锟斤拷锟接癸拷锟斤拷锟截讹拷锟斤拷锟絟(hu锟斤拷n)锟斤拷锟斤拷锟斤拷锟斤拷使山锟絴锟斤拷锟斤拷鋼管碉拷锟斤拷锟皆猴拷锟絞锟皆很低ｏ拷锟节旓拷锟斤拷锟絕锟斤拷锟叫無锟斤拷锟紷锟斤拷锟斤拷變锟斤拷锟斤拷锟斤拷锟窖時(sh锟斤拷)锟斤拷锟秸碉拷锟斤拷锟斤拷锟杰低碉拷锟斤拷锟絴(zh锟斤拷)锟斤拷碳锟斤拷鋼达拷锟皆憋拷锟紽(xi锟斤拷n)锟节燂拷庸锟斤拷^锟斤拷锟叫極锟阶發(f锟斤拷)锟斤拷锟絖锟斤拷锟斤拷锟斤拷碳锟斤拷锟斤拷萍锟斤拷锟绞癸拷锟斤拷^锟斤拷锟叫無锟斤拷锟紷锟斤拷锟斤拷變锟斤拷锟斤拷锟斤拷锟斤拷锟节幾猴拷锟斤拷锟絣(f锟斤拷)锟斤拷锟斤拷锟斤拷變锟轿碉拷锟斤拷r锟铰發(f锟斤拷)锟斤拷锟斤拷锟窖★拷锟斤拷20锟斤拷锟給(j锟斤拷)锟斤拷锟皆侊拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟絯锟斤拷锟斤拷锟斤拷锟紸锟斤拷锟斤拷石锟酵伙拷锟斤拷锟较筹拷锟斤拷锟斤拷锟斤拷鍋爐锟斤拷(d锟斤拷o)锟斤拷锟杰★拷锟斤拷輪锟紺(j锟斤拷)锟絶片锟斤拷锟絣(f锟斤拷)電機(j锟斤拷)锟紻(zhu锟斤拷n)锟斤拷锟斤拷锟节癸拷锟斤拷锟斤拷锟斤拷l(f锟斤拷)锟斤拷(d锟斤拷ng)锟紺(j锟斤拷)锟斤拷锟絯锟饺癸拷锟教結(ji锟斤拷)锟斤拷(g锟斤拷u)锟斤拷锟斤拷一锟劫發(f锟斤拷)锟斤拷锟斤拷锟皆旓拷锟斤拷锟铰癸拷锟斤拷锟紷些锟斤拷锟皆旓拷锟斤拷锟铰癸拷锟絚锟斤拷锟教結(ji锟斤拷)锟斤拷(g锟斤拷u)锟斤拷锟侥达拷锟酵伙拷锟斤拷锟結(ji锟斤拷)锟斤拷(g锟斤拷u)锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟锟斤拷锟斤拷锟较的高忥拷(qi锟斤拷ng)锟饺伙拷锟酵猴拷锟接結(ji锟斤拷)锟斤拷(g锟斤拷u)锟侥诧拷锟斤拷锟斤拷锟絇(gu锟斤拷n)锟斤拷
锟斤拷锟絴(zh锟斤拷)锟介：a3锟斤拷q235锟斤拷q345锟斤拷10#锟斤拷20#锟斤拷35#锟斤拷45#锟斤拷40cr锟斤拷20cr锟斤拷16mn-45mn锟斤拷27simn锟斤拷20g锟斤拷12crmo锟斤拷15crmo锟斤拷15crmog锟斤拷35crmo锟斤拷35crmog锟斤拷42crmo锟斤拷40crmog锟斤拷12cr1mov锟斤拷12cr1movg
锟斤拷锟铰烇拷锟斤拷N锟杰材堬拷(zh锟斤拷)锟叫橈拷(bi锟斤拷o)锟斤拷(zh锟斤拷n)锟斤拷锟結(ji锟斤拷)锟斤拷(g锟斤拷u)锟杰ｏ拷gb/t8162-1999
锟斤拷锟絯輸锟斤拷锟矫無锟絧鋼管ｏ拷gb/t8163-1999
锟斤拷锟叫夛拷鍋爐锟矫無锟絧鋼管ｏ拷gb3087-1999
液锟斤拷支锟斤拷锟矫無锟絧鋼管ｏ拷gb/t17396-2009
锟竭夛拷鍋爐锟矫無锟絧鋼管ｏ拷gb5310-1999
锟斤拷锟绞高夛拷锟矫無锟絧鋼管ｏ拷gb6478-86
石锟斤拷锟窖伙拷锟矫無锟絧鋼管ｏ拷gb9948-88
锟斤拷锟絴(zh锟斤拷)锟紷探锟矫無锟絧鋼管ｏ拷yb235-70
石锟斤拷锟紷探锟矫無锟絧鋼管ｏ拷yb528-65
锟斤拷锟斤拷锟矫無锟絧鋼管ｏ拷gb5213-85
锟斤拷锟杰無锟絧鋼管ｏ拷gb3639-83
锟結(ji锟斤拷)锟斤拷(g锟斤拷u)锟矫诧拷锟絇鋼管ｏ拷gb/t14975-1994
锟斤拷锟絯锟矫诧拷锟絇鋼管ｏ拷gb/t14976-1994
锟斤拷锟斤拷鋼管ｏ拷gb/t3092-1993
锟斤拷\锟斤拷锟杰ｏ拷gb/t3091-1993
锟斤拷锟絴(zh锟斤拷)锟斤拷锟斤拷锟斤拷鋼癸拷锟斤拷锟斤拷锟絴(zh锟斤拷)锟斤拷锟給锟絧鋼癸拷锟斤拷锟竭撅拷锟饺無锟絧鋼癸拷锟斤拷锟竭撅拷锟饺撅拷锟斤拷鋼癸拷锟斤拷锟斤拷要锟斤拷锟斤拷鋼癸拷