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         山東電阻爐選型,除了容積和溫控你還要考慮這些事

        電阻爐是指以電流通過導體所產生的的焦耳熱為熱源的加熱爐,常用的發熱元件有電阻絲、電阻帶等。與傳統的火焰爐比,電阻爐熱效率高,熱度容易控制、爐溫均勻、爐體壽命長,缺點是耗電費用高。電阻爐可用于金屬、陶瓷的燒結、溶解和分析;也可用于實驗室對元素進行進一步分析和測定;機械工業中也常用電阻爐來進行金屬鍛前加熱、低熔點金屬熔化、砂型和油漆膜層的干燥、小型鋼件熱處理加工等。
        Resistance furnace refers to the heating furnace with Joule heat generated by current passing through the conductor as the heat source. The commonly used heating elements include resistance wire, resistance belt, etc. Compared with the traditional flame furnace, the resistance furnace has the advantages of high thermal efficiency, easy heat control, uniform furnace temperature and long furnace life. The disadvantage is high power consumption. Resistance furnace can be used for sintering, dissolution and analysis of metals and ceramics; It can also be used for further analysis and determination of elements in the laboratory; Resistance furnace is also commonly used in mechanical industry to heat metal before forging, melt low melting point metal, dry sand mold and paint film, heat treatment and processing of small steel parts, etc.


        按加熱溫度分,工作溫度在 650℃以下的電阻爐為低溫爐,650~1000℃為中溫爐,1000℃以上為高溫爐。
        According to the heating temperature, the resistance furnace with working temperature below 650 ℃ is a low-temperature furnace, 650 ~ 1000 ℃ is a medium temperature furnace, and above 1000 ℃ is a high-temperature furnace.
        按傳熱方式分,電阻爐分為輻射式電阻爐和對流式電阻爐。輻射式電阻爐以輻射傳熱為主,對流傳熱作用較??;對流式電阻爐以對流傳熱為主,通常稱為空氣循環電阻爐。在高溫和中溫爐內主要以輻射方式加熱。在低溫爐內則以對流傳熱方式加熱。
        According to the heat transfer mode, the resistance furnace is divided into radiation resistance furnace and convection resistance furnace. Radiant resistance furnace is dominated by radiant heat transfer, and the effect of convective heat transfer is small; Convection resistance furnace is mainly convective heat transfer, which is usually called air circulation resistance furnace. It is mainly heated by radiation in high-temperature and medium temperature furnaces. In the low-temperature furnace, it is heated by convection heat transfer.
        電阻爐的基礎選購很簡單,只要關注兩個基礎參數即可:容積和溫控范圍。但在此之外,搜科采購管家認為要選擇一臺性價比高、使用壽命長的電阻爐,你還需要考慮以下事項:
        The basic purchase of resistance furnace is very simple. Just pay attention to two basic parameters: volume and temperature control range. However, in addition, the purchasing housekeeper of Soko believes that to select a resistance furnace with high cost performance and long service life, you also need to consider the following matters:
        1. 爐膛等級和材料;不同爐膛材料的電阻爐加熱效果、使用壽命會有一些差距。高溫電阻爐的爐膛可以分為四個等級:
        1. Furnace grade and material; There are some differences in heating effect and service life of resistance furnace with different furnace materials. The furnace of high temperature resistance furnace can be divided into four grades:
        普通耐火材料,造價低,受熱有限;高溫鋁爐膛,適用于不含碳的試驗;碳化硅爐膛,升溫速度不快,加熱對比好;陶瓷纖維爐膛,升溫速度快,但有時溫度過高也有焚毀爐膛的風險。
        Ordinary refractory, low cost, limited heating; High temperature aluminum furnace, suitable for carbon free test; Silicon carbide furnace, slow heating rate and good heating comparison; Ceramic fiber furnace has a fast heating rate, but sometimes the temperature is too high, there is a risk of burning the furnace.
        綜合來說,實驗室采購高溫電阻爐,搜科建議您還是選碳化硅爐膛比較好。
        Generally speaking, the laboratory purchases high-temperature resistance furnace. Soko recommends that you choose silicon carbide furnace.
        2. 爐膛的溫度;每個電阻爐都標稱了溫度范圍,但在實際應用中,您要區別儀器設計溫度和使用溫度的區別。
        2. Furnace temperature; Each resistance furnace has a nominal temperature range, but in practical application, you should distinguish the difference between instrument design temperature and service temperature.
        一般來說,要選擇比您的使用溫度數值稍高一些的產品,因為爐膛標稱的很高的設計溫度,使用時因各種條件限制可能并不能達到溫度。
        Generally speaking, you should choose products with a slightly higher value than your service temperature, because the nominal design temperature of the furnace is very high, and the temperature may not be reached due to various conditions.
        3. 加熱元件;高溫電阻爐加熱元件一般有電阻絲、硅碳棒、硅鉬棒三種。通常來說1000-1200度用電阻絲,1300度用硅碳棒。
        3. Heating element; The heating elements of high temperature resistance furnace generally include resistance wire, silicon carbide rod and silicon molybdenum rod. Generally speaking, resistance wire is used for 1000-1200 degrees and silicon carbide rod is used for 1300 degrees.
        4. 爐體結構;電阻爐有一體式和分體式兩種。一體式電阻爐將溫度控制與爐體設計合為一體,無須安裝直接使用。分體式電阻爐需要將溫度控制儀先安裝在爐體上,再進行下一步的安裝配置,步驟較為繁瑣。但分體式電阻爐通常相對便宜一些。
        4. Furnace body structure; There are two types of resistance furnace: integrated type and split type. The integrated resistance furnace integrates temperature control and furnace body design, and can be used directly without installation. For the split resistance furnace, the temperature controller needs to be installed on the furnace body first, and then the installation and configuration in the next step. The steps are cumbersome. But split resistance furnaces are usually relatively cheap.
        除此之外,您還可以了解一下電阻爐的爐溫控制系統,溫度控制系統主要由感溫元件和與之相匹配的測溫線路以及溫度控制儀表構成。爐溫均勻的電阻爐才能在試驗中有更好的表現。
        In addition, you can also learn about the furnace temperature control system of resistance furnace. The temperature control system is mainly composed of temperature sensing elements, matching temperature measuring circuits and temperature control instruments. The resistance furnace with uniform furnace temperature can perform better in the test.
        本文由山東電爐為您提供,我們的網站是:http://www.mycarabinerkeychain.com/ 我們將以全心全意的熱情為您提供服務,歡迎您的訪問!
        This article is provided by Shandong electric furnace. Our website is: http://www.mycarabinerkeychain.com/ We will serve you with wholehearted enthusiasm. Welcome to visit!

         
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