【Basic-Die-Casting】技术资料——模具行业从业者必备知识手册
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Die Casting
Presentation to Alchemy , 28 February 2002
Basic Die Casting
October 23, 2006
Copyright Motorola”2002 Motorola Confidential & Proprietary
Die Casting
Presentation to Alchemy , 28 February 2002
Die Casting Future Series of Presentations
• Basic Die Casting Metallurgy and Melt handling
October 27, 2006 - Location: CR-IL93 - New York Room 1:30pm – 3:30pm
• Pressure vs. Flow Rate (Q) known as PQ^2 and Gating Design
November 6, 2006 - Location: CR-IL93 - Newark Room 9:30pm – 11:30pm
• Dimensional Repeatability and Casting Defects
November 20, 2006 - Location: CR-IL93 - Newark Room 9:30pm – 11:30pm
• Die Cooling System and Die Casting Lubricants
December 6, 2006 - Location: CR-IL93 - Newark Room 2:00pm – 4:00pm
• Die Coatings and Surface Treatment
December 15, 2006 - Location: CR-IL93 - Newark Room 1:00pm – 3:00pm
• Die Design Concepts
January 9, 2007 - Location: CR-IL93 – LV- Assembly A- 9:00pm – 11:00pm
• Product Design For Die Casting
January 23, 2007 - Location: CR-IL93 – LV- Assembly A- 9:00pm – 11:00pm
Copyright Motorola”2002 Motorola Confidential & Proprietary
Die Casting
Presentation to Alchemy , 28 February 2002 Basic Die Casting October 23, 2006
Die Casting:
is a process in which the liquid metal or semi-liquid
metal is forced into a reusable die very fast with high
pressure and temperature
.
• Three types of injection mechanism
•Cold Chamber
•Hot Chamber
•Thixomolding
• Four parts of the basic process
•Injection
•Solidification and cooling
•Opening
•Ejection
Copyright Motorola”2002 Motorola Confidential & Proprietary
Die Casting
Presentation to Alchemy , 28 February 2002 Basic Die Casting October 23, 2006
Three Injections Mechanisms
Cold Chamber
• Metals that melt at high temperatures
• Metals that react with the injection mechanism
• Aluminum, magnesium and brass
Hot Chamber
• Used with metals that melt at lower temperatures
• Initially for zinc, Lead and now being magnesium
Thixo-Molding
• Hopper, Mg chips, screwing mechanism
• Mainly for magnesium
Copyright Motorola”2002 Motorola Confidential & Proprietary
Die Casting
Presentation to Alchemy , 28 February 2002 Basic Die Casting October 23, 2006
Type of injection mechanism:
Cold Chamber
Copyright Motorola”2002 Motorola Confidential & Proprietary
Die Casting
Presentation to Alchemy , 28 February 2002 Basic Die Casting October 23, 2006
Type of injection mechanism:
Hot Chamber
Copyright Motorola”2002 Motorola Confidential & Proprietary
Die Casting
Presentation to Alchemy , 28 February 2002 Basic Die Casting October 23, 2006
Type of injection mechanism:
Thixo-Molding
Copyright Motorola”2002 Motorola Confidential & Proprietary
Die Casting
Presentation to Alchemy , 28 February 2002 Basic Die Casting October 23, 2006
Four Parts of the Basic Process
1-Molten metal is injected into steel dies
. High pressures ensure molten metal fills the empty space
between the die halves
2- While metal is held in the die, it solidifies and cools
3- When solidification and cooling is completed, the die is opened
4- And the solid die casting is ejected
Copyright Motorola”2002 Motorola Confidential & Proprietary
Die Casting
Presentation to Alchemy , 28 February 2002 Basic Die Casting October 23, 2006
•Die Block Die Components
•Cavity
•Injection-related components
Parts include biscuits, sprues, runners, gates, overflows and vents
•Ejection-related components
The space in which the casting is formed usually called the die cavity
Copyright Motorola”2002 Motorola Confidential & Proprietary
Die Cas
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