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zinc casting alloys
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Book Chapter
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003144
EISBN: 978-1-62708-199-3
... Abstract This article provides information on the properties, compositions, designations, and applications of zinc and zinc alloys. It discusses the principal areas of application of zinc: in coatings and anodes for corrosion protection of irons and steels; in zinc casting alloys; as an...
Abstract
This article provides information on the properties, compositions, designations, and applications of zinc and zinc alloys. It discusses the principal areas of application of zinc: in coatings and anodes for corrosion protection of irons and steels; in zinc casting alloys; as an alloying element in copper, aluminum, magnesium, and other alloys; in wrought zinc alloys; and in zinc chemicals. The zinc coating applications of hot dip galvanizing, electrogalvanizing, plating, and thermal spray are presented. The use of zinc alloys in both gravity and pressure die castings is discussed as well as the three main types of wrought products: flat-rolled products, wire-drawn products, and extruded and forged products. The article also provides a section on the corrosion resistance of zinc and zinc coatings in various atmospheres.
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005333
EISBN: 978-1-62708-187-0
... Abstract Die castings is the process most often used for shaping zinc alloys. This article tabulates the compositions of zinc casting alloys and comparison of typical mechanical properties of zinc casting alloys. It discusses additions of alloys to the zinc, including aluminum, magnesium...
Abstract
Die castings is the process most often used for shaping zinc alloys. This article tabulates the compositions of zinc casting alloys and comparison of typical mechanical properties of zinc casting alloys. It discusses additions of alloys to the zinc, including aluminum, magnesium, copper, and iron. The article illustrates a characteristic five-layer microstructure of zinc alloy casings. It discusses the various methods of finishing of zinc alloy die castings, including chromium plating, polishing, painting, and electropainting. The article describes the casting of inserts and their uses in the zinc. It concludes with information on applications for zinc die castings.
Book Chapter
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005307
EISBN: 978-1-62708-187-0
... Abstract This article describes the control of alloy composition and impurity levels in die casting of zinc alloys based on agitation, use of foundry scrap, and melt temperature and fluxing. It reviews the process considerations for the melt processing of the zinc alloys. The process...
Abstract
This article describes the control of alloy composition and impurity levels in die casting of zinc alloys based on agitation, use of foundry scrap, and melt temperature and fluxing. It reviews the process considerations for the melt processing of the zinc alloys. The process considerations include the usage of furnaces and launder system, scrap return, inclusions in zinc alloys, fluxing of zinc alloys, and galvanizing fluxes. The article discusses the materials and lubricant selection, casting and die temperature control, and trimming process used in hot chamber die casting for zinc alloys. It also reviews other casting processes for zinc alloys, such as sand casting, permanent mold casting, plaster mold casting, squeeze casting, and semisolid casting.
Book: Corrosion: Materials
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003830
EISBN: 978-1-62708-183-2
... Abstract Zinc is one of the most used metals, ranking fourth in worldwide production and consumption behind iron, aluminum, and copper. This article commences with an overview of the applications of zinc that can be divided into six categories: coatings, casting alloys, alloying element in...
Abstract
Zinc is one of the most used metals, ranking fourth in worldwide production and consumption behind iron, aluminum, and copper. This article commences with an overview of the applications of zinc that can be divided into six categories: coatings, casting alloys, alloying element in brass and other alloys, wrought zinc alloys, zinc oxide, and zinc chemicals. It discusses the corrosion and electrochemical behavior of zinc and its alloys in various environments, particularly in atmospheres in which they are most widely used. The article tabulates the corrosion rates of zinc and zinc coatings immersed in various types of waters, in different solutions in the neutral pH range, and in soils at different geographic locations in the United States. It concludes with information on the forms of corrosion encountered in zinc coatings, including galvanic corrosion, pitting corrosion, and intergranular corrosion.
Book: Surface Engineering
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001315
EISBN: 978-1-62708-170-2
... Abstract Zinc and zinc alloys require surface engineering prior to coating or use to improve adhesion and corrosion resistance. Die-cast zinc parts, in addition, must be trimmed and finished to remove flash and parting lines. This article covers zinc cleaning procedures as well as coating and...
Abstract
Zinc and zinc alloys require surface engineering prior to coating or use to improve adhesion and corrosion resistance. Die-cast zinc parts, in addition, must be trimmed and finished to remove flash and parting lines. This article covers zinc cleaning procedures as well as coating and finishing processes. It explains how to remove parting lines and presents several mechanical finishing methods, including surface polishing, brushing, controlled shot peening, and buffing. It also provides information on solvent cleaning, emulsion cleaning, aqueous detergent or alkaline cleaning), electrocleaning, acid dipping, and zinc conversion coating treatments.
Book: Corrosion: Materials
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003819
EISBN: 978-1-62708-183-2
... steel, aluminum, zinc, cadmium, and magnesium and therefore will accelerate the corrosion of these metals. With titanium, copper, silver, and passivated stainless steels, lead is the anode of the cell and suffers accelerated attack. In either case, the rate of corrosion is governed by the difference in...
Abstract
The rate and form of corrosion that occur in a particular situation depend on many complex variables. This article discusses the rate of corrosion of lead in natural and domestic water depending on the degree of water hardness caused by calcium and magnesium salts. Lead exhibits consistent durability in all types of atmospheric exposure, including industrial, rural, and marine. The article tabulates the corrosion of lead in various natural outdoor atmospheres and the corrosion of lead alloys in various soils. It explains the factors that influence in initiating or accelerating corrosion: galvanic coupling, differential aeration, alkalinity, and stray currents. The resistance of lead and lead alloys to corrosion by a wide variety of chemicals is attributed to the polarization of local anodes caused by the formation of a relatively insoluble surface film of lead corrosion products. The article also provides information on the corrosion rate of lead in chemical environments.
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005302
EISBN: 978-1-62708-187-0
... alloys, aluminum-silicon-copper casting alloys, aluminum-zinc-magnesium casting alloys, and aluminum-magnesium casting alloys. The article also discusses benefits of grain refinement in aluminum casting alloys. boron fatigue strength grain refinement grain size mechanical properties porosity...
Abstract
Grain refinement in aluminum casting alloys tends to reduce the amount of porosity and the size of the pores and to improve mechanical properties, especially fatigue strength. This article provides information on measurement of grain size in alloys and describes the mechanisms of grain refinement in aluminum casting alloys. It reviews the use of boron and titanium as a grain refiner for aluminum casting alloys. The article discusses the best practices for grain refinement in various aluminum casting alloys. These include aluminum-silicon casting alloys, aluminum-silicon-copper casting alloys, aluminum-silicon-copper casting alloys, aluminum-zinc-magnesium casting alloys, and aluminum-magnesium casting alloys. The article also discusses benefits of grain refinement in aluminum casting alloys.
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005267
EISBN: 978-1-62708-187-0
... relatively low temperatures and include zinc alloys with casting temperatures between 400 and 450 °C (750 and 840 °F). Also, lead and tin alloys, together with other systems having casting temperatures below 250 °C (480 °F), are routinely hot chamber die cast. The injection end of a hot chamber die casting...
Abstract
This article describes the melting process of casting metals used in hot chamber die casting. It discusses the design and capabilities of injection components, such as gooseneck, plunger, and cylinder. The article reviews the distinctions between hot and cold chamber processes. Gate and runner design and temperature control for die casting are discussed. The article explains the ejection and post-processing techniques used for the hot chamber die casting. The techniques include robotics operation, recycling, and fluxing.
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003175
EISBN: 978-1-62708-199-3
... covers the types and melting and casting practices of copper alloys, zinc alloys, magnesium alloys, titanium alloys, and superalloys, and provides a brief account on the casting technique of metal-matrix composites. aluminum alloys casting copper alloys magnesium alloys melting metal-matrix...
Abstract
Aluminum alloys are primarily used for nonferrous castings because of their light weight and corrosion resistance. This article discusses at length the melting and metal treatment, structure control, sand casting, permanent mold casting, and die casting of aluminum alloys. It also covers the types and melting and casting practices of copper alloys, zinc alloys, magnesium alloys, titanium alloys, and superalloys, and provides a brief account on the casting technique of metal-matrix composites.
Book Chapter
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005303
EISBN: 978-1-62708-187-0
.... Casting characteristics of copper can be improved by small additions of elements such as beryllium, silicon, nickel, tin, zinc, chromium, and silver. The copper-base casting alloy family can be subdivided into three groups according to solidification (freezing) range. The three groups are as follows...
Abstract
This article describes the casting characteristics and practices of copper and copper alloys. It discusses the melting and melt control of copper alloys, including various melt treatments to improve melt quality. These melt treatments include fluxing and metal refining, degassing, deoxidation, grain refining, and filtration. The article provides a discussion on these melt treatments for group I to III alloys. It describes the three categories of furnaces for melting copper casting alloys: crucible furnaces, open-flame furnaces, and induction furnaces. The article explains the important factors that influence the selection of a casting method. It also describes the production of copper alloy castings. The article concludes with a discussion on the gating and feeding systems used in production of copper alloy castings.
Book: Surface Engineering
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001257
EISBN: 978-1-62708-170-2
... cast tin-zinc anodes. Tin-zinc alloys exhibit excellent solderability, ductility, and corrosion resistance. Chromate posttreatments are limited to yellow or clear. The tin-zinc deposit is semibright as-plated and is used primarily as a functional coating. Tin-zinc is finding increasing application in...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006254
EISBN: 978-1-62708-169-6
... alloys and the relationship between hardness and mechanical properties of the alloys. The article discusses the effects of elements such as aluminum, zinc, manganese, rare earths, and yttrium, on precipitation hardening. It describes the types of heat treatment for magnesium alloys, including annealing...
Abstract
Magnesium alloys are used predominantly for high-pressure die-cast applications in which the use of a deliberate heat treatment is uncommon. This article provides information on the heat treatment designations for magnesium alloys. It describes the effects of grain size on magnesium alloys and the relationship between hardness and mechanical properties of the alloys. The article discusses the effects of elements such as aluminum, zinc, manganese, rare earths, and yttrium, on precipitation hardening. It describes the types of heat treatment for magnesium alloys, including annealing, stress relieving, solution treating and aging, and reheat treating. The article also discusses the preventive measures for the common problems encountered in heat treating magnesium alloys; and the evaluation of the effectiveness of heat treating procedures. In addition, it presents the processing steps involved in the heat treatment of magnesium alloys and in the prevention and control of magnesium fires.
Book Chapter
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005444
EISBN: 978-1-62708-196-2
... alloys; tin and tin alloys; titanium and titanium alloys; zinc and zinc alloys; and pure metals. thermal conductivity aluminum aluminum alloys copper copper alloys iron iron alloys lead lead alloys magnesium magnesium alloys nickel nickel alloys tin tin alloys titanium titanium...
Abstract
This article contains a table that lists the thermal conductivity of selected metals and alloys near room temperature. These include aluminum and aluminum alloys; copper and copper alloys; iron and iron alloys; lead and lead alloys; magnesium and magnesium alloys; nickel and nickel alloys; tin and tin alloys; titanium and titanium alloys; zinc and zinc alloys; and pure metals.
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006288
EISBN: 978-1-62708-169-6
... ( Table 4 ) include the 2 xx.x (aluminum-copper), the 3 xx.x (Si-Mg-Cu), and the 7 xx.x (zinc-magnesium) alloy series. Temper designations are summarized in Table 5 . Table 4 Typical heat treatments for aluminum alloy sand and permanent mold castings Except where ranges are given, listed...
Abstract
This article focuses on the aging characteristics of solution and precipitation heat treated aluminum alloy systems and their corresponding types. It includes information on aluminum-copper systems, aluminum-copper-magnesium systems, aluminum-magnesium-silicon systems, aluminum-zinc-magnesium systems, aluminum-zinc-magnesium-copper systems, and aluminum-lithium alloys.
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003247
EISBN: 978-1-62708-199-3
... and their alloys are prepared by techniques similar to those used for preparing stainless steel specimens. In grinding and polishing of cast zinc, distortion can occur to a depth 20 to 100 times as great as the deepest scratch. Therefore, in each stage of grinding and polishing...
Abstract
This article describes the metallographic technique for nonferrous metals and special-purpose alloys. These include aluminum alloys, copper and copper alloys, lead and lead alloys, magnesium alloys, nickel and nickel alloys, magnetic alloys, tin and tin alloys, titanium and titanium alloys, refractory metals and alloys, zinc and zinc alloys, and wrought heat-resisting alloys. The preparation of specimens for metallographic technique includes operations such as sectioning, mounting, grinding, polishing, and etching of nonferrous metals and alloys. The article contains tables that list the etchants for macroscopic examination and microscopic examination of nonferrous metals and special-purpose alloys.
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005334
EISBN: 978-1-62708-187-0
... V—Gadolinium W—Yttrium Y—Antimony Z—Zinc Table 2 Nominal compositions of magnesium casting alloys for sand, investment, and permanent mold castings Alloy Composition, % Al Zn Mn Rare earths Gd Y Zr AM100A 10.0 … 0.1 min … … … … AZ63A 6.0...
Abstract
This article focuses on the variety of alloys, furnaces, and associated melting equipment and on the casting methods available for manufacturing magnesium castings. The casting methods include sand casting, permanent mold casting, die casting, thixomolding, and direct chill casting. The article discusses the flux process and fluxless process for the melting and pouring of magnesium alloys. It describes the advantages and disadvantages of green sand molding and tabulates typical compositions and properties of magnesium molding sands. The article provides information on the machining characteristics of magnesium and the applications of magnesium alloys.
Book: Surface Engineering
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001248
EISBN: 978-1-62708-170-2
... nickel chromium, in many instances offers better corrosion protection than thin coatings of nickel chromium, and at much lower cost. Much recent attention has been focused on the development of techniques for electroplating alloys such as zinc-iron, zinc-nickel, and zinc-cobalt. The operating...
Abstract
Commercial zinc plating is accomplished by a number of distinctively different systems: cyanide baths, alkaline noncyanide baths, and acid chloride baths. This article focuses on the composition, advantages, disadvantages, operating parameters, and applications of each of the baths. It provides information on the control of thicknesses of zinc specified for service in various indoor and outdoor atmospheres and on the similarities between cadmium and zinc plating.
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006049
EISBN: 978-1-62708-172-6
... stainless steel (active) Ni-Resist (high-Ni cast iron) Chromium stainless steel, 13% Cr (active) Cast iron Steel or iron 2024 aluminum (4.5 Cu, 1.5 Mg, 0.6 Mn) Active or anodic Cadmium ↓ Commercially pure aluminum (1100) Zinc Magnesium and magnesium alloys Source: Ref 14...
Abstract
The use of zinc in corrosion-protective coatings is due to its higher galvanic activity relative to that of steel. Pure zinc dust provides the best sacrificial protection to steel in a galvanic couple. Zinc-rich coatings can be subcategorized according to the type of binder material used, namely, inorganic and organic zinc-rich coatings. Common inorganic binders such as post-cured water-based alkali metal silicates, self-cured water-based alkali metal silicates, and self-cured solvent-based alkyl silicates, are reviewed. The article also compares inorganic and organic zinc-rich coatings, and discusses the concerns regarding zinc-rich coatings.
Book Chapter
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006275
EISBN: 978-1-62708-169-6
...-rich alloys has been practiced for bearing alloys, pewterware, and organ pipe alloys. Some of the principles underlying these applications are reviewed first. Zinc alloys are used extensively in both gravity castings (permanent mold and sand castings) and in pressure die castings. On...
Abstract
This article discusses the various heat treating processes, namely, solid-solution hardening, solution treating, solution aging and dispersion hardening, for low-melting-point alloys such as lead alloys, tin-rich alloys, and zinc alloys. Heat treating of tin-rich alloys has been practiced for bearing alloys, pewterware, and organ pipe alloys. The article reviews the principles underlying these applications.
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006274
EISBN: 978-1-62708-169-6
... example of this is the heat treatment of zinc alloy die castings to stabilize dimensional changes from phase changes at elevated temperatures. Precipitation and transformation effects in solid nonferrous alloys are briefly introduced in this article, with an emphasis on the major types of nonferrous...
Abstract
This article describes the different types of precipitation and transformation processes and their effects that can occur during heat treatment of various nonferrous alloys. The nonferrous alloys are aluminum alloys, copper alloys, magnesium alloys, nickel alloys, titanium alloys, cobalt alloys, zinc alloys, and heat treatable silver alloys, gold alloys, lead alloys, and tin alloys. It also provides a detailed discussion on the effects due to precipitation and transformation processes in these non-ferrous alloys.