機(jī)械專業(yè)畢業(yè)設(shè)計(jì)(論文)外文翻譯---用拋丸清理機(jī)對(duì)板材軋輥進(jìn)行拋丸處理-文庫吧
2025-04-17 00:18 本頁面
【正文】 下，即使用尺寸最合適的彈丸，輥的粗糙度也在上限（粗糙度為 ） 。 因此，有必要降低空氣的工作壓力。空氣閥是用來控制壓力的，但它對(duì)空氣壓力的變化非常敏感，而且拋丸機(jī)的操作也不穩(wěn)定。因此，減壓閥被放置在油水分離器和拋丸設(shè)備間。這使我們能在精確度 下把在收集室的氣壓從 控制到 ?？諝忾y的運(yùn)用使拋丸裝置能夠穩(wěn)定的運(yùn)行。 為了把輥加工到不同直徑，有必要每次都改變拋丸槍的位置，而 SM2 拋丸機(jī)的設(shè)計(jì)沒有提供這個(gè)功能。例如，現(xiàn)在要把直徑為 400 毫米的輥加工到 500 毫米，必須關(guān)閉拋丸機(jī)做調(diào)整。在設(shè)計(jì)新拋丸機(jī)時(shí)，應(yīng)該考慮改變槍的高度的可能。 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。然而，觀察輥表面的拋丸過程是很困難的。因此，三個(gè)額外的 500 瓦燈泡在百葉窗的保護(hù)下，安裝在工作艙的天花板上。 圖三 7 機(jī)器（圖 3）的控制是通過控制面板 2，在空中路線的閥 5，用來控制輥的轉(zhuǎn)速和噴管移動(dòng)的變阻器，可以起動(dòng)排氣風(fēng)扇機(jī)、在機(jī)器后的起動(dòng)按鈕來完成的。 SM2 拋丸裝置這樣的布置控制起來不方便，控制速度的變阻器沒有精確的范圍，這使決定正確的速度變的困難。事實(shí)上，為確定每個(gè)控制手柄的新 位置，有必要決定速度。這些缺點(diǎn)在設(shè)計(jì)新機(jī)器的時(shí)候必須消除。排氣線的水平部分累積的金屬垃圾的清除也有必要改善。排氣線難以達(dá)到地面水平 4 米以上的位置。 為了給拋丸機(jī)的獨(dú)立單元提供更多方便和簡(jiǎn)化它的維護(hù)， 鋼鐵冶金研究所開發(fā)并交給 Zaporozhstal 廠的建議已部分投入在現(xiàn)有的機(jī)器使用， 而且 將研究 設(shè)計(jì) 類似的新 機(jī)型 。 SM2 氣動(dòng)拋丸機(jī)的改進(jìn)使得控制和維持指定順序拋丸冷軋工作輥和表面通過板料站更加可能。因此， Zaporozhstal 廠 正大量生產(chǎn)被冷軋的建設(shè)板料，這些板料以符合有色冶金技術(shù)規(guī)格 168369 和 168669 的表面粗糙度生產(chǎn)。 8 外文翻譯原文 SHOT BLASTING MACHINES FOR THE BLASTING OF SHEET MILL ROLLS V. I. Meleshko, A. P. Kachailov, V. G. Boikov, V. L. Mazur, T. P, Kobka and I. I. Krivolapov At the present time~ much attention is being devoted to increasing the quality of rolled products, partieularly sheet. To a significant degree this depends upon the preparation of the roll surface. Many plants are engaged in improving the quality of working the roll surface in preparing them for article was written by personnel from Zaporozhstal Plant, Magogorsk Metallurgical Combine, the Institute for Ferrous Metallurgy, Dnepropetrovsk, and Magogorsk Mining and Metallurgical Institute on this very real problem.. The surface microrelief, or roughness, of cold rolled constructional sheet has an influence on the mechanical and production properties of metal, and also on the finish quality of parts made from this sheet. The final surface microrelief of thin sheet steel is formed in a skin pass on work roils which have been given a rough finish with metal shot. Normally the rough surface finish on the work rolls of skin pass stands is produced in pneumatic and rotor shot blasting machines. Experience in their use has shownthat the pneumatic machines used in the country39。s steel plants do not fill the need for high quality blasting of roll surfaces. In 1969 the Institute for Ferrous Metallurgy, Dnepropetrovsk, did work on the SM2 shot blasting machine in No. 1 Cold Roiling Mill of Zaprozhstal Plant, which revealed a number of shortings in its construction. To provide sheet with the surface roughness required by the specifications of Volga Automobile Plant (R a = g),the basic requirements for the design of shot blasting machines were determined, The machine must provide: 1. a constant shot size during operation, in other words, effective removal of shot of the specified size from 9 worn shot。 2. the possibility of controlling air pressure in the collector of the shot blast machine during stable operations。 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
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