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输送带的生产之前离不开哪些步骤的辅助?

来源:http://www.huafengxiangsu.com 时间:2019-06-24 15:12:39 浏览次数:
1.烘干
1. Drying
华锋橡塑保送带的专家引见,帆布进压延机之前都要烘干,烘干条件要在快速消费时取样测定帆布经烘干后的含水宰来决议,请求烘干后的含水率为1%~3%,含水率超越时要进步烘干温度。
Experts of Huafeng Rubber and Plastic Belt introduced that canvas should be dried before it enters calender. The drying condition is to sample and determine the moisture content of canvas after drying when it is consumed rapidly. The water content of canvas after drying is requested to be 1%~3%, and the drying temperature should be improved when the moisture content exceeds.
2.粗炼与热炼
2. Crushing and Heating
帆布擦胶、贴胶及压胶片的胶料进压延机之前都要经粗炼及热炼。粗炼的工艺条件普通为前辊约50℃,后辊约45℃,胶片厚度不大于8mm,经过辊简3次以上.热炼的工艺条件普通为前辊温度约为65℃,后辊约为60℃。胶片的胶种不同,辊温要有调粮。胶片厚度不大于8mm,经过辊简4次以上,使送到压延机的胶料温度稳定,从而使压延的胶片及贴胶厚度稳定。
Canvas rubbing, gluing and pressing film must be roughened and heated before entering calender. Roughening process conditions are generally about 50 C for the front roll, 45 C for the back roll, no more than 8 mm for the film thickness, and more than three times for the roll. Hot smelting process conditions are generally about 65 C for the front roll and 60 C for the back roll. Different kinds of film, roll temperature should be adjusted. The thickness of film is not more than 8 mm, and the temperature of the compound sent to the calender is stable after four times of roll reduction, thus the thickness of calendered film and paste is stable.
大倾角输送带
3.擦胶
3. Rubbing
华锋橡塑保送带的专家引见,对未经浸胶的棉帆布,保送带厂通常是先擦胶然后再贴胶。擦胶通常在三辊压延机上停止(图2-24),压延机中辊涂有骨胶,使擦胶料只包中辊(骨胶溶在热水中,涂辊后水分蒸发,骨胶就涂在辊简上)。
Huafeng rubber and plastic belts experts introduced that for non-dipped cotton canvas, the belts factory usually rubbed first and then glued. Rubbing usually stops on a three-roll calender (Fig. 2-24). The roller in the calender is coated with bone glue, so that the glue only covers the middle roll (the bone glue is dissolved in hot water, the water evaporates after the roll is coated, and the bone glue is coated on the roll slip).
擦胶过程是帆布经烘干后进入压延机中下辊间,中辊速率较快,因此将擦胶料搓擦人帆布缝中成为擦胶布,未擦人布缝的胶料粘在辊筒上回到上中辊间的供胶处混合新的胶料后反复再停止擦胶。这些工艺请求胶料威氏可塑度0.55以上,配方有再生胶的,工艺上好操作,不易呈现外观缺陷。没有再生胶的胶料如白擦胶则可塑度请求更高一些。也请求进粗炼时胶料的门尼焦烧时间为25~35min,以免胶料在擦胶时发作自硫及废品带布层欠硫。擦胶容易发作的质量缺点如下。
Rubbing process is that canvas dries and enters the middle and lower rollers of calender. The middle rollers speed is faster. Therefore, rubbing rubbing rubbing rubbing rubbing rubbing rubbing rubbing rubbing rubbing rubbing rubbing rubbing rubbing rubbing rubbing rubbing rubbing rubbing rubbing rubbing rubbing rubbing rubbing rubbing rubbing rubbing rubbing rubbing rubbing Ru These processes require that the plasticity of the compound is above 0.55, the formula has regenerated rubber, the process is well operated, and the appearance defects are not easy to appear. No reclaimed rubber, such as white rubbing rubber, can require higher plasticity. It is also requested that the Mooney scorch time of rubber compound be 25-35 minutes during crushing to avoid self-sulfur in rubber rubbing and sulfur deficiency in waste tape cloth. The quality shortcomings of rubbing glue are as follows.
(1)露白即胶规划部或大局部擦不上胶。保送带的专家引见,发作这种状况的缘由是多方面的,胶料可塑度低,帆布松紧不分歧惹起打折等都能够惹起露白。处置办法是在餌白处涂上与擦胶配方一样的胶浆,干后才干运用。
(1) When exposed, the glue planning department or most of the glue can not be erased. According to the experts of the belts, there are many reasons for this situation, such as low plasticity of rubber, no difference in canvas elasticity and discount. The disposal method is to coat the bait white with the same size as the formula of rubbing glue, and then use it after drying.
(2)压破布边缘由是帆布边紧。处理办法是要纺织厂设法处理。暂时的方法是剪破布边或将布边斯去。
(2) The edge of the crushed cloth is tightened by the edge of the canvas. The way to deal with it is for the textile mill to try to deal with it. The temporary way is to cut the edge of the cloth or go to the edge of the cloth.
(3)呈现自硫胶粒缘由有胶料焦烧时间短或辊简温渡过高,处置办法为:将自琉胶粒肃清,然后涂上与擦胶配方一样的胶浆,干后才干进入下工序。配方中不要运用硫化临界温度低的促进剂如TMTD,它的临界温度只要103℃,与擦胶工作温度接近,很容易惹起胶料自硫。
(3) The reason of self-sulfur rubber particles is that the scorching time of rubber particles is short or the temperature of rollers is too high. The disposal method is to remove the self-sulfur rubber particles and then coat them with the same formula as the rubbing rubber, then dry them into the next process. The accelerator with low critical vulcanization temperature, such as TMTD, should not be used in the formulation. The critical vulcanization temperature of TMTD is only 103 C, which is close to the working temperature of rubbing rubber and can easily cause the self-sulfur of rubber compound.
(4)扒皮即中辊包胶部分或全部脱辊而贴在胶布上。保送带的专家引见,缘由是骨胶涂得不好或中辊包辊胶厚渡过厚。应重新涂骨胶,扒皮胶布用溶剂将包胶片扒下来,再涂上同配方的胶浆,干后才干进人下工序。
(4) Skin scraping means that the middle roll is partially or totally rolled off and pasted on the rubber cloth. The experts of the belt introduced that the reason was that the bone glue was poorly coated or the rubber thickness of the roll was too thick. Bone glue should be re-coated, the stripped rubber cloth should be stripped off with solvent, then coated with the same formula of mortar, dry before entering the next process.
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