2010-03-08 14:48:46 阅读2 评论0 字号:大中小
译文:
海德堡四开四色胶印机,在运行中时有出现自动给纸装置吸气不足、递纸器吸纸不稳的故障。由于当时生产任务很急,所以没有及时卸下检查维修,为此又运行了一段时间后最终出现了分气阀失灵,吸咀无法吸气的故障了。于是,现场抢修先将分气阀卸下检查,在折卸出阀体后发现该阀体(阀体直径42mm,铸铜材料)有约30mm长的一段外圆面严重研磨“烧”损,被磨损的面存在沟痕。这种状况要么更换阀体,要么修复受损面而使阀体能与阀套正常配合。 因为没有备件,所以,我决定先采用补焊修复处理。如果以铜钎焊补,工件在加热钎焊过程中会产生变形的可能,若以锡焊补则不会变形,操作简便,只是硬度不能与铜同等。但作为现场的应急处理则是可以采用的,为此,我先选择用焊锡补,锡焊以松香作焊剂(比用焊锡膏效果好),用150w的电烙铁加热,达到极限温度后才能开始进行焊,焊上锡层后要高出原来的外圆尺寸,之后将这补焊后的阀体夹在车床上精车和砂光焊层,使之达到正常的尺寸。对阀套的处理只是将阀套夹在车床上,用0 # 砂布将研磨受损的部位砂光就行了。这样在短时间内即完成了修复处理,重新装上机运行使用,性能正常,达到使用要求。说明采用这种方法处理是可行的。 除了上述那样处理可行外,还有象上述那样的磨损处理有条件的也可以用粘涂技术进行修复。粘涂技术处理具有操作方便,适用性广,涂层与母体结合性好,修复速度快、质量好、成本低等优点。粘涂所采用的粘涂剂有耐磨剂、填补剂、紧急修补剂等,粘涂剂一般类似泥状,分为A·B两个组分,使用时把A、B两组按说明的比例混合搅和均匀后涂敷(涂敷之前对涂敷面要用丙酮清净),在固化后车削,恢复到原来的尺寸。这种粘涂剂固化后的硬度与铜的硬度相差无几,进口的粘涂剂如美国的贝尔佐纳系列,国产的有TS111牌号,这些质量比较好。可供同行选择。
“ Automatically to the paper plant gas sub-on
原文:
Heidelberg quarto four-color offset printing press, appears from time to time in the operation of automatic suction device to the lack of paper, handing in the slip of paper suction instability failures. Because at that time very eager and production tasks, there is no time unloading the inspection, maintenance, and to this end some time after running the final emergence of sub-valve failure, smoking and the failure of the suction nozzle can not be. As a result, on-site repair first sub-discharge check valve, in the folding unloading valve and discovered that the valve (valve diameter of 42mm, bronze material) about 30mm long cylindrical grinding face a serious "burn" damage, There are grooves worn face. This state of affairs either valve replacement or repair damaged body surfaces Ershi tie with the valve cover to normal. Because there is no spare parts, so I decided to use repair welding repair process. If the copper brazing welding, brazing the workpiece in the heating process will have the possibility of deformation, if tin-welding is not deformed, easy to operate, but the hardness can not be the same with copper. But as the scene of the emergency treatment is can be used, for this reason, I will choose to fill solder, tin solder with rosin flux to make (good results than using solder paste), with 150w electric soldering iron heating temperature after the limit to begin for welding, welding on the tin layer after going to the cylindrical dimensions than the original, then this repair welding after the body caught in the lathe, welding layer of fine cars and sanding to make it reach the normal size. The handling of the valve cover valve cover just caught in the truck bed, with 0 # emery grinding the damaged parts of the sanding on the list. This in a short time to complete the rehabilitation treatment, re-fitted to run on the machine performance to normal, to use requirements. Shows using this approach is feasible. Apart from the above address as possible, there is wear and tear as described above deal with conditional visco coating techniques can also be used to repair it. Cohering technical processing with easy operation, the applicability of a wide combination of coating and maternal good, repair, fast, good quality and low cost. Used in coating of sticky Paint a wear-resistant agent, filling agent, emergency repair agent and so on, stick Paint generally similar to the sludge, divided into A · B 2 component, use the A, B groups follow the instructions of the After the mixing ratio mix evenly coated (coated surface prior to coating to use pure acetone), in cured turning to restore to its original size. This post-curing adhesive Paint hardness and the hardness of copper is almost the same, such as the United States imp
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