A Copper Alliance Member
- Applications
- Resources
- Find Suppliers of Copper
- Technical Reference Library
- Publications List
- Automotive
- Building Construction: Architecture
- Building Construction: Fire Sprinklers
- Building Construction: Home Builders' Marketing Materials
- Building Construction: Natural Gas
- Building Construction: Plumbing
- Electrical: Energy Efficiency
- Electrical: General
- Electrical: Power Quality
- Electrical: Telecommunications
- Industrial: Bronze Bearings
- Industrial: Cast Products
- Industrial: General
- Industrial: Machined Rod Products
- Industrial: Mold Alloys
- Properties / Standards
- Seawater
- Soldering / Brazing / Welding
- Special Publications
- Statistics / Directories
- Seminars, Workshops & Training
- Market Data
- Standards
- Properties
- Properties of Wrought and Cast Copper Alloys
- Properties of Copper
- Low Temperature Properties of Copper
- Cryogenic Properties of Copper
- Typical Uses of Copper Alloys
- Copper Compounds
- Microstructures of Copper Alloys
- Corrosion Protection & Resistance
- Fabrication Practices
- Powder Metallurgy
- Metallurgy of Copper-Base Alloys
- Questions?
- Consumers
- Education
- Environment
- Publications
- Newsletters
- Publications List
- Automotive
- Building Construction: Architecture
- Building Construction: Fire Sprinklers
- Building Construction: Home Builders' Marketing Materials
- Building Construction: Natural Gas
- Building Construction: Plumbing
- Electrical: Energy Efficiency
- Electrical: General
- Electrical: Power Quality
- Electrical: Telecommunications
- Industrial: Bronze Bearings
- Industrial: Cast Products
- Industrial: General
- Industrial: Machined Rod Products
- Industrial: Mold Alloys
- Properties / Standards
- Seawater
- Soldering / Brazing / Welding
- Special Publications
- Statistics / Directories
- About CDA
Industrial
- Copper Motor Rotor
- Casting Alloys
- Copper Alloy Molds
- Applications
- Benefits
- Comparison of Mold Alloy Properties
- Whirlpool Uses Copper Alloy Mold
- Technical Paper - Cooling Prediction
- Technical Paper - Getting Heat Out of the Mold
- Copper Core With Copper Chill Plate Runs Better Than Water In Steel
- Copper-Alloy Core Solves Warpage
- Copper-Alloy Cores Reduce Cycle Time
- Wear Research To Compare Copper Molds To Steel
- ANTEC Report - Use of Copper Alloys to Reduce Mold Condensation Problems
- ANTEC Report - Impact of Fines Separation
- ANTEC Report - Comparison of Various Hard Coatings
- ANTEC Report - Understanding the Source of Reduced Mechanical Properties
- ANTEC Report - Resistance to Erosive Wear
- ANTEC Report - Undercutting Mold Performance
- ANTEC Report - Minimization of Gate Wear
- Applications
- Bronze Sleeve Bearings
- Selecting Bronze Bearing Materials
- Electronic Connector Design Guide
- Mold Design Guidelines
Copper Alloy Molds Applications
Sprue Bushing
Copper alloy sprue bushings are used to achieve better temperature control of the contained melt inside. For those applications where the melt is prematurely freezing-off inside the sprue bushing, a copper alloy sprue bushing increases the rate at which heat can be transferred to the melt and keeps it molten. For those applications where the sprue and runner is thicker than the part and is limiting the cycle time, a copper alloy sprue bushing increases the rate at which heat can be transferred from the melt and solidifies the sprue faster. This produces a faster molding cycle which equates to reduced manufacturing cost.
Hot Runner Maniforld Heater
For more demanding applications, where a hot runner manifold is needed, a copper alloy heater module provides faster start-up times because of faster heat transfer to the melt. It will also provide better melt temperature control because of faster heat transfer response.
Engraving
Engraving can be done with copper alloys. The same care has to be taken to provide draft angles and relief as with other mold materials.
Molds for Injection & Blow-Molding
Copper alloy molds provide faster cycle times for both injection- and blow-molded parts because of their superior heat transfer characteristics. Faster cycle times reflect better equipment utilization, forestalling the need to purchase additional equipment.
Cores
In most thermoplastic processing, the plastic shrinks onto the core and may separate from the cavity wall. When that happens, the majority of the cooling of the plastic is from the core. Molders have found that cycle times can be dramatically cut by inserting copper alloy cores in their molds. Copper alloy cores can be of any geometry-from simple cores to the most complex.
Products
A wide range of resins and plastic products are molded using copper alloy tooling. These products range from high mechanical-property and tight dimensional tolerance requirements to those with lower requirements.
