steven's blog for plastic mold and plastic molding

We often say that the plastic, are all collectively referred to plastic varieties, its application is extensive and, therefore, classification is also different. By end-use can be roughly divided into two general types of plastics and engineering plastics. General plastic such as polyethylene (PE), polypropylene (PP), polystyrene (PS), modified polystyrene (such as: SAN, HIPS), polyvinyl chloride (PVC), which are day-to-day the most widely used Materials, modest performance and low cost. Engineering refers to a number of mechanical parts or engineering structural materials such as industrial quality plastic. Its mechanical properties, electrical properties, on the chemical environment of tolerance, high temperature, low temperature tolerance, etc. are more superior characteristics, even at the project is technically able to replace some plastic mold or other materials. Common there is ABS, polyamide (abbreviated PA, commonly known as nylon), polycarbonate (PC), polyoxymethylene (POM),...

We must first know some of the basic injection mold knowledge before talking about plastic mold steel, first of all, the classification of plastic mold are generally is on the length of plastic mold by 5 grades, over a million times grade 1;grade 2:500,000-100 million;grade 3 :from 300,000 to 500,000;grade4:from 100,000 to 300,000, grade 5: 10 million below Grade1 and 2 need mold stell hardness after heat-treatment reaching around HRC50 , or plastic which is easy to wear, could violate the tolerance, so we should select steel heat afetr treatment showing better performance, but also at high hardness of the state has good cutting performance, of course, There are other considerations. I seldom come into contact with Chinese-made plastic mold steel, it can only introduce commonly used in the Pearl River Delta for imported raw materials. Usually chosen in Sweden 8407, S136, U.S. 420, H13, Europe, 2316,2344,083, or Japan SKD61, DC53 (the original mold for the metal material, the use of s...

First step: to conduct a feasibility analysis for the plastic mold design products ,taking computer chassis as an example, the first drawings of the components make use of design software products for group analysis of legislation, that is what our work of plans to ensure that plastic mold design drawings prior to the correctness of each product, on the other hand, we can be familiar with the various components in the entire chassis to know the importance of the key size, which in the plastic mold design is very good. Step two: after Product analysis job bing carried out, we will analyze what kind of plastic mold structure, and product scheduling process to determine the work of workers and to make use of design software products start at the beginning of Products general follow-up project forward from the start, such as one in five Product requirements processes, and stamping is completed at the beginning of Products Products Drawings from the start to the four projects, three project...

The Mound Laser and Photonics Center - MLPC (Miamisburg, OH) recently developed a technique for using an Nd: YAG laser marking system to engrave EDM electrodes. It has done engraving in graphite such as Poco EDM-3 with excellent results, achieving depths of up to 0.045". Graphite is an excellent absorber of the Nd:YAG laser radiation and consequently can be engraved deeply. Metal electrodes (e.g., copper and NAK-55) also can be engraved to a depth of about 0.010" to 0.015", but it takes considerably longer. The advantages of laser engraving are described below. Variety of Engraving The laser can engrave numbers, letters and graphics such as logos. The characters can be engraved in normal orientation or in reverse. The artwork can be deep engraved into the EDM electrode or left standing - depending on requirements. Detailed Artwork Detailed artwork from a customer can be converted for use in the laser in as little as five to 10 minutes, if a good electronic file is availa...

Table Of Content: General: 1.1 Basic information Control of tool building progress Packaging and transportation Product Responsibility Flow diagram 1.2 Documents Drawings / CAD-files Moldflow report Preliminary Tool Drawings Final Tool drawings Progress reports Trial reports Cooling plan Hot-runner plan Hydraulic plan Checklist A General Technical Information: Tool Construction Tool base design Steel quality and Heat Treatment Screw bolds Tool centring and Tool Clamping Inter Locks Hoisting holes and lifting bolts Hoisting blocks Isolating plates Lubrication and cavity protection Date stamps and recycling inserts Painting Tool marking Cavity and Core Cavity/Core Marking Texture Coatings Cooling-connectors principles Venting O-rings Guiding Welding in Cavity and Core Shrinkage allowance Hot-runner Hot-runner Suppliers Principle of Hot-runner systems Principle of wire connections Heating central nozzle Cams and Slides Ejection Dismantling of Tool Spare Parts Switches Remarks General: 1.1...

进入位：　gate location 水口形式：gate type 大水口：edge gate 细水口： pin-point gate 水口大小：gate size 转水口：　switching runner/gate 唧嘴口径：　sprue diameter 二、流道: runner 热流道：　hot runner,hot manifold 热嘴冷流道: hot sprue/cold runner 唧嘴直流: direct sprue gate 圆形流道：round (full/half runner) 流道电脑分析：mold flow analysis 流道平衡:runner balance 热嘴：　hot sprue 热流道板：hot manifold 发热管：cartridge heater 探针: thermocouples 插头：　connector plug 插座： connector socket 密封/封料： seal 三、运水：water line 喉塞：line lpug 喉管：tube 塑胶管：plastic tube 快速接头：jiffy quick connector plug/socker 四、模具零件：　mold components 三板模：3-plate mold 二板模：2-plate mold 边钉/导边：leader pin/guide pin 边司/导套：bushing/guide bushing 中托司：shoulder guide bushing 中托边L：guide pin 顶针板：ejector retainner plate 托板：　support plate 螺丝： screw 管钉：dowel pin 开模槽：ply bar scot 内模管位：core/cavity inter-lock 顶针：　ejector pin 司筒：ejector sleeve 司筒针：ejector pin 推板：stripper plate 缩呵：movable core,return core core puller 扣机（尼龙拉勾）：nylon latch lock 斜顶：lifter 模胚（架）： mold base 上内模：cavity insert 下内模：core insert 行位（滑块）： slide 镶件：i...

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