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        最近中文字幕大全免费,MM131少妇午夜福利视频,天天夜碰日日摸日日澡,黑人4O公分全部进入
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         用箱式電阻爐做灰分檢測時需要注意哪些事項?

        箱式電阻爐是專為高等院校﹑科研院所的實驗室及工礦企業對陶瓷、冶金、電子、玻璃、化工、機械、耐火材料、新材料開發、特種材料、建材、金屬、非金屬及其它化和物材料進行燒結﹑融化﹑分析、生產而研制的專用設備。
        Box resistance furnace is a special equipment specially developed for laboratories of colleges and universities, scientific research institutes and industrial and mining enterprises to sinter, melt, analyze and produce ceramics, metallurgy, electronics, glass, chemical industry, machinery, refractories, new material development, special materials, building materials, metals, nonmetals and other chemical and physical materials.
        箱式電阻爐是國家標準節能型周期作業電爐,主要供合金鋼制品、各種金屬機件正火、淬火、退火等熱處理之用,或金剛石等切割刀片進行高溫燒結用途。
        Box resistance furnace is a national standard energy-saving periodic operation electric furnace, which is mainly used for heat treatment such as normalizing, quenching and annealing of alloy steel products and various metal parts, or high-temperature sintering of cutting blades such as diamond.
        用箱式電阻爐做灰分檢測時需要注意哪些事項?
        What should be paid attention to when using box resistance furnace for ash detection?
        1、樣品經初步灼燒后取出冷卻,可從坩堝邊緣慢慢加入少量去離子水(不可直接酒在殘灰上,以防殘灰飛揚)使水溶性鹽類溶解,被包住的碳粒暴露出來,在水浴上蒸干。
        1. After the sample is preliminarily burned, take it out for cooling. Slowly add a small amount of deionized water from the edge of the crucible (do not directly put wine on the residual ash to prevent the residual ash from flying) to dissolve the water-soluble salts, expose the wrapped carbon particles and evaporate them dry in a water bath.
        烘箱中充分干燥(充分去除水分,以防再灰化時,因加熱使殘灰飛散),再灼燒到恒重。
        Fully dry in the oven (fully remove water to prevent the residual ash from flying due to heating during re ashing), and then burn to constant weight.


        2、把坩鍋放入馬弗爐或從爐中取出時,要在爐口停留片刻,使坩堝預熱或冷卻,防止因溫度劇變而使坩堝破裂。
        2. When the crucible is put into or taken out of the muffle furnace, stay at the furnace mouth for a moment to preheat or cool the crucible to prevent the crucible from cracking due to drastic temperature change.
        3、坩堝鉗在鉗熱坩堝時,要在電爐或馬弗爐上預熱片刻。
        3. Crucible clamp when heating the crucible, preheat it on the electric furnace or muffle furnace for a while.
        4、灼燒后的坩堝應冷卻到200℃以下再移入干燥器中,否則因熱的對流作用,易造成殘灰飛散,且冷卻速度慢,冷卻后干燥器內形成較大真空,蓋子不易打開。
        4. The burned crucible shall be cooled to below 200 ℃ and then moved into the dryer, otherwise the residual ash is easy to scatter due to thermal convection, and the cooling speed is slow. After cooling, a large vacuum is formed in the dryer, and the cover is not easy to open.
        5、當坩堝放入干燥器后,先蓋上蓋子,再慢慢推開蓋子,放出空氣。這樣重復數次,把蓋子蓋緊并冷卻至室溫。
        5. When the crucible is put into the dryer, cover it first, and then slowly push the cover open to release the air. Repeat this several times, tighten the cover and cool to room temperature.
        6、從干燥器內取出坩堝時,因內部成真空,開蓋恢復常壓時,應該放輕動作,使空氣緩緩流入,以防殘灰飛散。
        6. When taking out the crucible from the dryer, due to the vacuum inside, when the cover is opened to restore normal pressure, it should be gently moved to make the air flow in slowly to prevent the residual ash from flying away.
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        The wonderful content of this article is provided by Shandong electric furnace. There are many wonderful content on this website. You can click to enter more content: http://www.mycarabinerkeychain.com/ We have special customer service to answer your questions

         
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