機(jī)械類外文文翻譯--拋丸清理機(jī)對(duì)板材軋輥進(jìn)行拋丸處理-免費(fèi)閱讀
【正文】 排氣線難以達(dá)到地面水平 4 米以上的位置。 為了觀察拋丸過程，燈火通明的工作艙長(zhǎng)壁上開了一個(gè)特別的觀察窗。 因此，有必要降低空氣的工作壓力。 12 噴槍通過傳送帶沿著輥移動(dòng)。槍管的一個(gè)缺點(diǎn)是對(duì)壓縮空氣的混合物和彈丸的節(jié)流作用，節(jié)流處橫向和縱向的管道也在。水蒸氣凝結(jié)在主線和拋丸設(shè)備內(nèi)，結(jié)果彈丸在低艙室內(nèi)都粘到一起，形成了堅(jiān)實(shí)的一堆。然而，解決這個(gè)問題的基本方案還是控制裝置的穩(wěn)定運(yùn)行。排氣口是一個(gè)大約有 30 度的錐體，彈丸慢慢通過這一缺口，但不完全，然后彈丸直徑減少到 10 毫米。實(shí)驗(yàn)表明，在氣壓 下 ,提供 。操作的輥的尺寸是直徑 400500 毫米，長(zhǎng)度 20204000 毫米。 通常情況下，對(duì)不合標(biāo)準(zhǔn)表面的工作輾壓粗加工是由 氣動(dòng)力學(xué)和電動(dòng) 拋丸 清理機(jī)完成 。 3. the handling of work rolls of different diameters (400500 mm) without special equipment on the machine。 4. simplicity in control and convenience in maintenance. The SM2 machine (Fig. 1) consists of a stationary closed chamber ! with a trolley on wheels aad movab!enozzles 2~ which under the action of pressed air discharge shot on to the roll surface, a worm conveyor 8, an elevator with a separator 4, the shot blast equipment 5, and an exhaust system 6. The equipment is mounted on a special foundation 1905 mm below the floor level The length of the machine withthe trolley out is 15fl00 ram, the height 4070 ram, and the width 4600 mr~ The dimensions of the rolls handled are 400500 mm in diameter and 20204000 mm in length. The total weight of the equipment is 15 tons. As research has shown, the dynamics of the wear of a working mixture of abrasive and the original condition of the shot changes during operation. During blasting, the shot takes on a wider size range and is worn down, forming many fine particles. The conditions under which the parts are blasted depend upon the size of the shot used. The contamination of the specified size by fine particles disrupts the process, producing a poor quality surface on the rolls and consequently on the sheet. To eliminate these problems it is necessary to either 3 regularly measure the position of the shot and make appropriate changes in the blasting sequence, which is difficult to do in practice, or to screen the shot during operation of the machine to provide the specified particle size. Stability in the blasting process is also determined by the quantity of shot delivered to the nozzles. It was experimentally established that supplying kg/sec of shot to the two nozzles in operating with an air pressure of atm provided stable operation. Equipping the machine with screening devices is an effective method for maintaining a constant shot size mix. This is confirmed both by data in the literature and by experience in the operation of SM1 and TsKb_P1 shot blast machines at Zaporozhstal Plant. The shot is delivered to the surface of the roll by the shot blast equipment, the chamber of which is divided by two diaphragms with charging vents into three partments and is equipped with an electropneumatic control device. The working mixture from the upper partment of the chamber drops to the lower and then to the collector. During operation of the machine,the vents are closed (turned on). The shot is poured in either after turning off the valves by the electropneumatic control device, or after shutting down the machine by the operator. When it is turned off, the vent descends, and between it and the diaphragm a circular gap 5 mm wide is formed. The vent is a cone with a slope of about 30% The shot drops slowly through this gap but not pletely, and therefore it increases to t0 ram. The loading vents are alternately turned on by the control device. The first time the SM
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