基于均匀设计方法研究不锈钢焊条的药皮温升

Study on the temperature rising of stainless steel electrode coating based on uniform design method

为探索从药皮配方改善不锈钢焊条尾部发红开裂的技术路线,基于均匀设计计算机软件制作、研究了28个不锈钢焊条小样。试验中选定12种药皮辅料作为自变量,并把每个自变量分成7个水平;把焊接过程中焊条的药皮温升作为指标,并用热电偶和X-Y记录仪测定。通过数理统计给出了自变量及其交互作用对应于指标的数学模型和趋势图。它们揭示出多种药皮辅料对药皮温升影响的内在规律:①萤石或长石含量增加时(其它组分含量固定在中值),焊条药皮的温升减弱。②有些药皮辅料如云母、铁砂、白泥、大理石和金红石,对焊条药皮温升的影响呈交互作用形式。

28 stainless steel electrodes were studied based on uniform design computer software. 12 coating ingredients were selected as independent variables and each one was divided into 7 levels. The temperature rising of electrode coating is the target function, which was measured with thermocouple and X-Y recording instrument. The mathematic model was given through mathematic statistics. The influences of 12 coating materials on the temperature rising are indicated as follows: (1) The temperature rising decreases with increasing the content of fluorite or feldspar. (2) Some coating ingredients such as muscovite, ferroferric oxide, white mud, calcite and rutile have mutual influences on the temperature rising which may be positively or negatively dependent on the relative content of the ingredients.