冷床設(shè)備價格點(diǎn)擊了解更多 圣霖國際以人為本

軋件在冷床冷卻過程中由于冷卻水不能均勻分布在型鋼表面，頭部冷卻速度較快，彎曲，形成浴盆狀，使腹板上的積水不能流出，導(dǎo)致上表面收縮率明顯大于型鋼下表面，產(chǎn)生上彎。

為消除不均勻變形，首先應(yīng)該使2輥壓下量足夠大，滿足型鋼塑變要求。消除型鋼原有變形，達(dá)到統(tǒng)一的變形的目的。

Rolling in bed cooling process due to the cooling water can not be uniformly distributed on the surface of steel, the head of the fast cooling rate, the first bend forming tub shaped, make web water can not flow, resulting in the surface shrinkage rate was significantly higher than that of the steel surface, due to bending.

In order to eliminate the uneven deformation, first of all, the 2 roller should be large enough to meet the requirement of the type of steel plastic change. The original deformation of the steel has reached the goal of uniform deformation.

近年來, 為適應(yīng)軋制制度變化繁多, 產(chǎn)品規(guī)格多、產(chǎn)品及高產(chǎn)量等要求, 我院認(rèn)真消化、吸收國內(nèi)外先進(jìn)技術(shù), 設(shè)計(jì)了一套具有同類水平的高速度、多品種、高質(zhì)量的小型型鋼和棒材冷床設(shè)備, 年產(chǎn)棒材可達(dá)90萬噸, 已達(dá)到了國外同類設(shè)備的先進(jìn)水平。

In recent years, in order to adapt to various changes in rolling system, many specificati, high quality products and high output, our hospital has carefully digested and absorbed advanced technology at home and abroad, designed a set of small steel and bar cold bed equipment with high speed, variety and high quality with the same kind of International advanced level. The annual production of rod can reach 900 thousand t, which has reached the advanced level of the same kind of equipment abroad.

工藝過程是：線材出精軋機(jī)后先入水冷導(dǎo)管進(jìn)行急冷，冷卻到650～750℃，經(jīng)成圈器成圈后落入流態(tài)床中。Whenthetemperatureoftheflowlayeris250C,theaustenitedecomitiontemperatureis550~600,similartothatofleadbathquenching。流態(tài)床用流動的、導(dǎo)熱性好的粒料(鋯砂，含ZrO267.2%；SiO232.8%)作媒介，用鼓風(fēng)機(jī)攪動這些顆粒呈懸浮運(yùn)動狀態(tài)，如同鉛浴池中的鉛液沸騰一樣。

The process is as follows: after the wire is finished, the first step is to enter the water cooling pipe and then to cool it to 650~750 degrees. The flow bed is used as a medium for flowing, good thermal conductivity particles (zirconium sand, containing ZrO267.2%; SiO232.8%). The particles are stirred by the blower to move in suspension, just as the lead liquid in the lead bath is boiling.

當(dāng)流態(tài)層溫度為250℃時，奧氏體分解溫度為550～600℃，同鉛浴淬火相似；當(dāng)流態(tài)層溫度為300℃時，奧氏體分解溫度約為500℃左右，比鉛浴淬火還低。

When the temperature of the flow layer is 250 C, the austenite decomition temperature is 550~600, similar to that of lead bath quenching. When the flow state temperature is 300, the austenite temperature is about 500 C, which is lower than the lead bath quenching.