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structural reaction injection molding

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Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003413
EISBN: 978-1-62708-195-5
... Abstract Resin transfer molding and structural reaction injection molding belong to a family, sometimes denoted as liquid composite molding. This article provides information on the characteristics and automotive and aerospace applications of liquid composite molding. It reviews techniques that...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003020
EISBN: 978-1-62708-200-6
... Abstract Resin transfer molding (RTM) and structural reaction injection molding (SRIM) are two similar processes that are well suited to the manufacture of large, complex, and high-performance structures. This article discusses the similarities and differences of RTM and SRIM processes and the...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003014
EISBN: 978-1-62708-200-6
... aesthetic concerns related to thermoplastic structural-foam injection molding. injection mold design injection molding process controls reciprocating-screw injection molding machine structural-foam injection molding thermoplastic injection molding thermoplastic molding compounds thermoset...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006021
EISBN: 978-1-62708-175-7
... Powder Injection Molding Apparatus for High Aspect Ratio Metal Micro-structure Production , J. Micromech. Microeng. , Vol 17 , 2007 , p 1803 – 1809 27. Nishiyabu K. , Andrews I. , and Tanaka S. , Accuracy Evaluation of Ultra-Compact Gears Manufactured by the MicroMIM Process...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006141
EISBN: 978-1-62708-175-7
... Abstract This article describes part selection, feedstock (powders and binders) characteristics and properties, tool design, and material and tooling for fabrication of metal powder injection molding (MIM) machines. It discusses the process parameters, operation sequence, molding machines...
Book Chapter

Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003370
EISBN: 978-1-62708-195-5
...) Hot molds required to promote cure, crystalline growth. (t) Curing reaction may produce peak exotherm, leading to degradation. The injection process ( Fig. 6 ) may be divided into four specific zones in which the molding compound properties may be changed. These zones, which correspond to...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003019
EISBN: 978-1-62708-200-6
... processing parameters of SMC components, providing details on tooling and process advantages and limitations. The article provides a general overview of the types of compression molding processes, including structural compression molding and thermoplastic compression molding. compression molding sheet...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003172
EISBN: 978-1-62708-199-3
... automobile cylinder heads. In pressure die casting, the metal is injected into the mold at high pressures. The process is primarily used for high-volume production of zinc, aluminum, and magnesium alloys, although ferrous and copper-base alloys may also be cast. The process is capable...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003415
EISBN: 978-1-62708-195-5
... technical and economic factors. Automotive applications were expanded in a number of areas ( Ref 17 , 18 ), especially where compression molded parts were able to replace steel structures. The production volume growth rate was lower at the end of the 1990s, despite the wider use of GMT in a growing number...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003016
EISBN: 978-1-62708-200-6
... process forms hollow structures, the designer has a higher level of freedom to create part shapes, in comparison with injection molding, compression molding, reaction injection molding, extrusion, or thermoforming. Part consolidation, ease of assembly, fastener reduction, structural integrity, and design...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005249
EISBN: 978-1-62708-187-0
... porous structure of relatively high permeability. Permeability is held within a range of 15 to 30 AFS; the permeability of conventional plaster molds is 1 to 2 AFS. Recrystallization does not take place at the surface of the mold, because not enough water is present. Therefore, the surface remains smooth...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006297
EISBN: 978-1-62708-179-5
... ( Ref 10 ). There has been long-standing interest in using minerals for molding that are different from typical foundry sands in the effort to avoid casting defects that arise from expansion and reaction between metal and mold material, to obtain smooth casting surface finish, or to reduce costs...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003414
EISBN: 978-1-62708-195-5
... Low and high performance parts Fig. 1 Production volume and relative part performance that can be achieved with various production techniques. SMC, sheet molding compounds; GMT, glass mat thermoplastics; RTM, resin transfer molding; SRIM, structural reaction injection molding; P/T, pressure...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003060
EISBN: 978-1-62708-200-6
... Abstract The design process for ceramic materials is more complex than that of metals because of low-strain tolerance, low fracture toughness and brittleness. The application of structural ceramics to engineering systems hinges on the functional benefits to be derived and is manifested in the...
Book Chapter

By Justin Heimsch
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005273
EISBN: 978-1-62708-187-0
... reheated to achieve the structures necessary for casting. The second casting process combines billet sawing, reheating, and the actual injecting of material into the mold. The article focuses on these processes and provides information on rheological tests. It discusses some key design concepts used in...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002491
EISBN: 978-1-62708-194-8
... processes include casting, reaction injection molding (RIM), structural reaction injection molding (SRIM), resin transfer molding (RTM), matched metal molding, filament winding, and pultrusion. Some of these processes are also used for noncomposite materials; casting is described separately below in the...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002492
EISBN: 978-1-62708-194-8
... material can be applied without significant degradation of mechanical properties. However, there are manufacturing processes and materials well suited for long assembly times. Many of the closed-mold processes, VARTM, or structural reaction injection molding (SRIM), when used with preforms can reduce the...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006513
EISBN: 978-1-62708-207-5
... moisture from binders in the mold). Metal molds also provide for faster”chill” (solidification rates) than sand molds, resulting in a finer dendrite arm spacing (DAS) ( Table 1 ) and finer structure than a sand casting ( Fig. 1 ). Table 1 Typical aluminum casting cooling rates and dendrite arm...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005275
EISBN: 978-1-62708-187-0
... Abstract Thixomolding is a method of molding thixotropic semisolid magnesium alloy pellets in a machine that resembles an injection molding machine in physical appearance and operation. This article describes the process of thixomolding. The use of hot sprues and hot runners in the thixomolding...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005193
EISBN: 978-1-62708-187-0
... 78 ( No. 12 ), Dec 1981 , p 961 – 973 18. Flinn R.A. , Van Vlack L.H. , and Colligan G.A. , Mold-Metal Reactions in Ferrous and Nonferrous Alloys , Trans. AFS , Vol 94 , 1986 , p 29 – 46 19. Askeland D.R. and Trojan P.K. , The Approach to Equilibrium...