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碳化硅元件安装运行须知 |
| 2011-3-27 |
| 1.为保护温和每支元件的负荷均匀，安装前要对元件进行配阻，每组阻值控制在＋/-10%以下。 In order to keep furnace temperature and the load-bearing uniform of each element，before installation，resistance distribution must be carried out.The resistance value deviation of each group should be below 10%. 2.由于碳化硅元件质脆，在安装维修时要小心，以免损坏。 As the element is very brittle，be careful while install and maintain to avoid any damage. 3.炉子在开始通电运行时，要逐步缓慢升压，不可一次加满负荷，否则会因冲击电流过大造成元件损坏。 When start to operate the furnace，raise voltage alowly and gradually，never give full load at one time，or the heating element will be damaged by over current impulse. 4.使用元件必须配备调压变压器或可控硅调压器及电压、电流表和温度自动控制仪表等。在使用过程中因元件氧化，电阻逐渐增加，为保持炉温正常，应提高使用电压。当电压提高到所用变压器最高限度仍不能满足要求时，可停炉改变元件的接线方式再继续使用。 To use the elements，you should prepare the adjustable transformer or silicon controlled transformer，voltage meter，current meter and autocontrol temperature meter etc. During the working，the voltage should be increased to maintain the furnace normal temperature becauise the resistance value will go up gradually caused y the oxidation of element. When the voltage get to the up limit of the requirement，the furnace should be stoopoped，change the way of wire connection and then continue work. 5.炉子在长期运行过程中，个别元件由于某种原因而损坏需更换时，要根据当时元件阻值增长情况，选补阻值适宜的元件，不可任意取新元件更换。若元件损坏较多或阻值增长过大，无法达到所需炉温时最好全部更换新元件。换下来的元件重新(用压表、电流表）测标其电阻值，配阻用在低温区。 In the course of long operation of the furnace，if any individual heating element is damaged owing to certain reasons and should be changed，you should replace it with proper one whose resistance value corresponds to that of the old one， never use a new heating elenent random. If the heading element is much damaged or its resistance value increases too much and cannot reach the furnace temperature，it is better to replace the heating elements with mew ones.Test and mark the resistance value of the old elements having been replaced (with voltmeter and ammeter) and distribute them in low temperature area. 6.新炉或长时间没有使用的炉子，在使用之前必须烘炉，烘炉时尽可能用旧元件或其它热源。 Before the new furnace of the furnace that has not been used for a long time is used， they must be dryinged.When drying them，it is better to use old elements or other heat source. 7.如果烧制器件或材料时，在加热过程中有水分排出，炉子要留有排气孔，以排除炉内的水分或其它有害废气，以免影响元件的使用寿命。 When firing appatatus or material， if there is water ejection， the furnace should have holes to eject water vapor or other waste gases in order to protect the elements service life. |
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