420rolling mill-圣霖國(guó)際【開拓創(chuàng)新】

軋件通過冷床下的強(qiáng)制噴水霧化，提高了冷卻效果；通過開／關(guān)冷卻水管和采用水壓控制，冷卻速度能夠得到調(diào)節(jié)。

所有的軋件均被送到冷床上的固定位置，由移鋼機(jī)構(gòu)將軋件從步進(jìn)梁上翻出并移至冷床的輸出輥道上。

The water under the bed by forced atomization， the cooling effect is improved; through the opening or closing of cooling water pipe and the hydraulic pressure，600rolling mill， the cooling speed can be adjusted.  

All of the workpiece were sent to a fixed on the cooling bed， a steel moving mechanism takes the output from the roller walking beam pulls out and moved to the bed on.

半閉口式機(jī)架是機(jī)架與機(jī)架蓋之間采用斜楔連接的一種機(jī)架。這種機(jī)架兼有開口式機(jī)架和閉口式機(jī)架的優(yōu)點(diǎn)，裝卸、換輥方便，制造容易，并有較高的剛度，故一般大中型的型鋼軋機(jī)都采用這種形式的機(jī)架。

A semi closed frame is a frame with a wedge between the frame and the frame cover. The rack has the advantages of open frame and closed frame. It has the advantages of log and unlog，420rolling mill， easy roll changing， easy manufacture and high rigidity. Therefore，綏化rolling mill， a large and medium-sized steel mill is adopted in this form.

在鍛造和軋制生產(chǎn)中，鋼坯一般在完全燃燒火焰的氧化氣氛中加熱。采用不完全燃燒的還原性火焰（即“自身保護(hù)氣氛”）來直接加熱金屬，可以達(dá)到無氧化或少氧化的目的。這種加熱方式稱為明火式或敞焰式無氧化加熱，成功地應(yīng)用于轉(zhuǎn)底式加熱爐和室式加熱爐。

In forging and rolling production， billets are usually heated in the combustion atmosphere of complete combustion flame. The direct combustion of metal can be achieved by the incomplete combustion of reduced flame (i.e.， the 'self protective atmosphere')， which can achieve the  of no oxidation or less oxidation. This heating method is called open flame or open flame oxidation free heating， which has been successfully applied to rotary hearth furnace and chamber heating furnace.