Category plastic mold

Hardness Conversion Chart

Hardness Conversion Chart Tensile strength Rm  N/mm2 Vickers hardness HV  Brinell hardness HB Rockwell hardness HRC 270 85 80.7 – 285 90 85.2 – 305 95 90.2 – 320 100 95.0 – 335 105 99.8 – 350 110 105 –…

plastic mold polishing standard data

The plastic  mold  finish standard data: polishing standard Surface finish of SPI-SPE standard A-0   # 1 diamond buff (optical requirements) A-1   # 3 diamond buff  polishing (mirror) A-2   # 6 diamond buff  polishing (mirror) A-3   # 15 diamond…

Mold temperature control

Mold temperature control Hot runner mold temperature is controlled by a system,which includes temperature control box,heating coil and nozzle. 1. method for mold temperature control there are several ways available methods such as steam, hot oil circulation, , and the…

hot runner injection mold

A hot runner injection mold is a type of injection molding system in which the plastic melt is heated and delivered to the mold via a heated nozzle. The main advantage of using a hot runner system is that it…

Plastic Mold Maintenance tips and know-how

plastic mold maintenance         一.准備清模工具:噴槍,氣槍,手電鉆,去漬油,砂紙,碎布,油石,煤油,圓銅刷,棉花. Prepare mold cleaning tools:spray gun,Air gun,electric hand drill,Cleaning fluid , clean Cloth ,Oil stone,Kerosene,Round copper brush,Cotton. 二.用油石將公母模入子的油污清除.(400#油石) Use oil-stone to polish dirt on the inserts, which is fixed in mold cavity or core.…

Injection Molding Touble Shooting

Injection Molding Touble Shooting Problems Water Mark Streak Flash Weld Line Poor Surface Unfilled Burn Color Problem Deform Thick Crack Possible Reason Low Barrel Temp ● ● ● ● ● ● High Barrel Temp ● ● ● ● ● High Injection Pressure ● ● ● Low Injection Pressure ● ● ● ● Short Packing Time ● Long Packing Time ●…

surface roughness

Surface Ra of different plastic molding material Ra   index arrange μm 0.012 0.025 0.05 0.1 0.2 0.4 0.8 1.6 3.2 6.3 12.5 25 inject Thermoplastics PMMA 0.025 0.05 0.1 0.2 0.4 0.8 1.6 ABS 0.025 0.05 0.1 0.2 0.4 0.8 1.6 AS 0.025…

slider and cam

Sliders :after plasticmold open,the cam and sliders have the relative movement trend, which trend makes the slider has 2 movement directions , opening direction and the horizontal direction .then the undercut could be released from the mold. figure     Suitable for thin mold plate and upper fixed plate screwed with the A plate with longer march surface , better stability         Suitable for thick mold plate , the big mold space,two-plate mold and three plate mold Matching surface L≧1.5D(D cam  diameter ) better stability         Suitable for thick mold plate , two-plate mold and three plate mold， mating surfaces L≧1.5D(D cam diameter ) Poor stability,hard machining.…