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首页 > 新闻咨讯 >   覆膜砂射芯机热芯盒怎么除垢

覆膜砂射芯机热芯盒怎么除垢

发布时间:2020-01-11
覆膜砂射芯机的芯盒中垢物的形成机理,主要是由于芯砂表面的树脂在射砂过程中受到射砂气流的冲击,部分树脂破裂,少量的树脂被挤压粘附于芯盒表面,日积月累逐渐在芯盒表面形成一层坚硬、致密的硬化树脂垢。因此,射砂压力过大,树脂质量差,芯砂中树脂加入量过高,脱模剂与所用树脂不匹配;芯盒表面粗糙都将促使芯盒结垢。液体喷砂机清洗芯盒:The formation mechanism of deposit box core coated sand core shooting machine, mainly due to resin core sand surface by shooting the impact of airflow in the sand shooting process, part of the resin burst, small amount of resin is extruded to adhere to the core box surface hardening resin scale days and months multiplying gradually formed a layer of hard, dense in the core the surface of the box. Therefore, the sand injection pressure is too large, the resin quality is poor, the resin content in core sand is too high, the release agent is not matched with the resin used, and the rough surface of the core box will cause the core box to scale. Liquid sandblasting machine cleaning box:1 工作原理1 working principle以磨液泵和压缩空气为动力,通过喷枪将磨液高速喷射到模具表面,达到光饰铸造模具的目的。磨液是用对模具有保护作用的载液与一定粒度的磨料(白刚玉砂,玻璃丸等人造磨料)按一定配比混合而成,放置在机体下部的贮箱中。工作时磨液泵将贮箱中的磨液以一定压力和流量通过磨液管路输入喷枪。此时,还有一磨液旁路经装置在其中的搅拌喷嘴高速喷出,从而使贮箱中的磨料和载液搅拌均匀;另外压缩空气由外接气源经过(溢)减压阀、电磁阀进入喷枪。喷枪是直接执行液体喷吵工作的主要部件。它与磨液、压缩空气管路系统相连接,设置在机体上部密闭的工作舱内。喷射出的磨液对铸造模具表面冲击磨削后,从圆盘工作台流下,经网孔板返回贮箱,如此循环便完成了对铸造模具的喷射清洗。With the grinding fluid pump and the compressed air as the motive force, the grinding liquid is sprayed high speed to the mold surface through a spray gun, so as to achieve the purpose of polishing the casting mold. The grinding fluid is mixed with a certain particle abrasive (white alumina sand, glass pellet and other artificial abrasives) by a certain proportion, which is protected by the mould, and placed in the tank at the bottom of the body. At work, the grinding fluid pump takes the grinding fluid in the tank to a certain pressure and flow through the grinding line into the spray gun. At the same time, there is a grinding fluid bypass, and the mixing nozzles in the device are spewed out at high speed, so that the abrasive and liquid in the tank are uniformly stirred. Besides, the compressed air is passed by the external air source through the overflow valve and the electromagnetic valve into the spray gun. The spray gun is the main component of the direct execution of the liquid noise. It is connected with the grinding fluid and the compressed air pipeline system, and is set in the closed cabin of the upper part of the body. After the grinding fluid was sprayed on the surface of the casting mold, the jet was washed down from the disk worktable and returned to the tank through the mesh plate, so that the spray cleaning of the casting mold was completed.2 清洗工艺2 cleaning process根据芯盒不同的工艺要求,有两种工作方式可供选择:According to the different process requirements of the core box, there are two modes of work to be selected:①不加压缩空气,只靠磨液泵供给磨液,通过喷嘴加速射向被清洗铸造模具。适用于定期对芯盒进行一般性清洗保养。(1) without compressed air, the grinding fluid is supplied only by a grinding pump, which is accelerated through the nozzle to the washed mold. It is suitable for regular cleaning and maintenance of the core box.②磨液系统和压缩空气系统同时启动,向喷枪同时提供磨液和压缩空气,使其在喷枪内混合后,经喷嘴向铸造模具表面高速喷射气、磨液流。由于有气、泵兼施的工作方式,使得喷出的气、磨液流具有更大压力,被载液包裹着的磨液质点动能加大,有效提高了芯盒的清洗能力(主要适用于芯盒表面树脂结垢的清洗)。(2) the grinding system and the compressed air system start simultaneously, provide liquid and compressed air to the spray gun at the same time, make it mixed in the spray gun, and spray the gas and liquid flow to the surface of the casting mould through the nozzle. Due to a gas pump, and way of working, the ejective gas, grinding fluid flow with greater pressure, by loading the grinding liquid particle kinetic energy liquid wrapped with the increase, improve the cleaning ability of core box (mainly suitable for cleaning the surface of core box resin fouling).3 生产效率和经济效益比较3 Comparison of production efficiency and economic benefit使用液体喷砂机和玻璃丸清洗芯盒的工艺基本上能够将芯盒表面较厚的树脂结垢清理干净,但对于较长时间没有清洗积垢很厚的沟槽处,却难于清除干净。同时启动空气压缩系统,则对于长期积垢有较好效果,但成本相对高一些。所以,要针对不同情况选用不同清洗工艺。Process using liquid sandblasting machine and glass cleaning Pill Box basically can be the core box surface thick resin fouling clean, but for a long time without cleaning groove fouling very thick, but it is difficult to clean. 同时启动空气压缩系统,则对于长期积垢有较好效果,但成本相对高一些。 Therefore, different cleaning processes should be selected for different conditions.覆膜砂射芯机的芯盒的结垢与清洗是我国许多企业多年来一直未能有效解决的难题。芯盒的结垢不仅造成铸造模具表面粗糙。严重影响砂芯的外观质量,导致铸件粘砂、尺寸精度降低、严重时则会造成铸件批量废品和铸造模具报废。The fouling and cleaning of the core box of the film mulching machine is a difficult problem for many enterprises in China for many years. The fouling of the core box not only causes the rough surface of the casting mold. The appearance quality of the sand core is seriously affected, which leads to the reduction of the casting, the reduction of the size accuracy, and the scrap of the castings and the scrap of the casting mould.
当前地址:http://www.pyshexinji.com/news/774/  作者:鹏宇射芯机
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