Small Neck 24mm, 30mm, 28mm Pco Plastic Preform Injection Mold

 

Conventional Mechanical Processing Methods for Composite Materials

1、 Sawing

Glass fiber reinforced thermosetting matrix laminates are cut using a hand saw or circular saw.

When using commonly used tools such as band saws and circular saws for thermoplastic composite materials, coolant should be added. It is best to cut graphite/epoxy composite materials with tools embedded with hard alloys. Controlling the strength of the saw during cutting is crucial to ensuring the quality of the saw surface. Although the sawing temperature is also a factor to be controlled, it generally has little impact, as the highest temperature encountered during sawing generally does not exceed the softening temperature of epoxy resin (182 ℃).

Metal matrix composites can be sawn with a wire saw embedded with diamonds, but their cutting speed is slower and can only be used for linear sawing. There are two speeds for conventional sawing of ceramic matrix composites using diamond grinding wheels: one is 250r/min, and the other is 4000r/min. This type of sawing can cause significant damage to the ceramic matrix composite material on the cutting surface. However, at higher cutting speeds, although the damage is significant, the cross-section is relatively uniform.

2、 Drilling and profiling milling

When drilling or profile milling on composite materials, the dry method is generally used. Most thermosetting composite laminates undergo shrinkage after drilling and profile milling, so a certain margin should be considered during precision machining, that is, the size of the drill bit or profile milling cutter should be slightly larger than the aperture size, and tungsten carbide or diamond drill bits or profile milling cutters should be used. When drilling, it is best to use a pad to prevent edge layering and outer layer tearing. In addition, the drill bit must be kept sharp and must adopt a process of quickly removing drilling chips and minimizing the temperature rise of the workpiece.

When drilling thermoplastic composite materials, it is more important to avoid overheating and the accumulation of drilling chips. Therefore, the drill bit should have a specific spiral angle, a wide and smooth chip removal groove, and the drill bit tip should be made of special materials. The spiral angle of a general drill bit after grinding is about 10-15 °, the back angle is 9-20 °, and the cone angle of the drill bit is 60-120 °. The drilling speed used is not only related to the material being drilled, but also to the size and depth of the borehole. The general electric hand drill has the best effect at a speed of 900r/min, while a fixed pneumatic drill has the best effect at a speed of 2100r/min and a feed rate of 1.3mm/s.

3、 Milling, cutting, turning, and grinding

Polymer based composite materials can be conveniently turned, bored, and cut using conventional ordinary lathes or table lathes. At present, high-speed steel, tungsten carbide, and diamond cutting heads are commonly used for machining tools. High precision polymer based composite material components can be processed using sand grinding or grinding. The most commonly used is a sand belt or drum grinder with a particle size of 30-240. Most commercially available abrasives can be used, but it is best to use synthetic resin bonded silicon carbide abrasives. When using conventional mechanical polishing for thermoplastic polymer matrix composites, coolant should be added to prevent abrasive blockage. There are two types of machines available for grinding, one is a wet belt grinder, and the other is a dry or wet grinding disc. When using silicon carbide or alumina grinding wheels for grinding, do not use flowing coolant to prevent the workpiece from becoming soft.

 

Composite laminates can be milled on standard machine tools using general processes. Brass milling cutters, high-speed steel milling cutters, tungsten carbide milling cutters, and diamond milling cutters can all be used. The back angle of the milling cutter must be ground to 7-12 °, and the milling edge must be sharp. The recommended milling speed for high-speed steel milling cutters is 180-300m/min, with a feed rate of 0.05-0.13mm/r and air cooling.

 

Thermoplastic composite materials can be processed using metal processing lathes and milling machines. High speed steel cutting tools can be effectively used as long as they remain sharp. Of course, using tungsten carbide or diamond cutting tools is more effective.

Metal matrix composite materials can generally be processed by cutting, turning, milling, and grinding. For most metal matrix composite materials, the prerequisite for obtaining excellent machining products is that the cutting tool should be sharp, the cutting speed should be appropriate, sufficient coolant or lubricant should be supplied, and the feed speed should be fast

 

 

 

Basic Information

Total Capitalization	less than US$50,000
Country / Region	China
Year Established	2014
Total Employees	100 to 149
Business Type	Exporter, Manufacturer, Trading Company

 

Trading Capabilities

Total Annual Sales	less than US$50,000
Export Percentage	90 percent to 94 percent
OEM Services	Yes
Small Orders Accepted	Yes
Brand Names	Innolead
Payment Terms	TT
Main Competitive Advantages	Experienced R&D Department, Large Product Line, ODM (Original Designing & Manufacturing), OEM Capability, Production Capacity, Reliability, Reputation
Other Competitive Advantages	NA
Major Customer	Soprano, European Thermodynamics Ltd.
Export Markets	Australasia, Central/South America, Eastern Europe, Mid East/Africa, North America, Western Europe

 

 

 

 

 

 

 

 

 

 

 

 

 

CONTACT US

Alex He

Tel:+86 15989331617

Whatsapp&Wechat:+86 15989331617

Skype ID:alex.ho43

Email: alex.he@innolead.net

 

Web:www.innolead.net

 

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