Complex Precision Casting, Shell, Cover, Lid, End Cover

Min.Order: 1

Product origin: Dalian, Liaoning, China

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US$ 1 ~ 1.5

Description

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A reusable metal mold is used and the most common process uses gravity to fill the mold, however gas pressure or a vacuum are also used in this process. A variation on the typical gravity casting process, called slush casting, produces hollow castings. Common casting metals are aluminium alloys, magnesium, and copper alloys. Other materials include tin, lead, and zinc alloys and iron and steel alloys are also cast in graphite molds. The gravity process begins by preheating the mold to 150-200 °C (300-400 °F) to ease the flow of metal and reduce thermal damage to the casting, when metal is poured into the mold cavity.
Prior to the hot metal entering the mold cavity, it is coated with a refractory material or a mold wash, which prevents the casting from sticking to the mold and also prolongs the mold life. Any sand or metal cores or components are then installed into the die and the mold is clamped shut. Molten metal is then poured into the mold and soon after solidification, the mold is opened and the casting removed to reduce chances of hot tears. The process is then started all over again, but preheating is not required because the heat from the previous casting is adequate and the refractory coating should last several castings. Because this process is usually carried out on large production run work-pieces, sometimes automated equipment is used to coat the mold, pour the metal, and remove the casting.

Designing Dies for Permanent Mold Casting

When dies are designed, they vary from part to part and alloy to alloy, however when designing a mold, one can allow for some venting usually through the slight crack between the two mold halves, but if this is not enough then very small vent holes are used. They are small enough to let the air escape but not the molten metal. A riser must also be included to compensate for shrinkage. This usually limits the yield to less than 60%.
Sometimes, mechanical ejector pins are included in the mold when coatings are not enough to remove casts from the molds. These pins are placed throughout the mold and usually leave small round impressions on the casting.

What is the Difference Between Gravity Casting and Sand Casting?

There are a wide range of key differences regarding gravity casting and sand casting. The main differences lie in the mold and how it is structured. Sand casting is accomplished by shaping a mold from a sand mixture and pouring molten liquid metal into the cavity in the mold. The mold is then cooled until the metal has solidified. It is essentially an expendable mold casting process since the mold is destroyed after its initial use. Additionally, sand casting allows for smaller batches to be made compared to permanent mold casting, which is designed for larger runs and is costlier.
Conversely, gravity casts can be used repeatedly to make identical parts. This type of reusable mold casting is highly useful for applications that require numerous production runs of the same part. The initial investment costs are a bit higher than sand casts, but the costs generally make up for themselves due to the extended usage factor.

Ensuring a High-Quality Surface Finish

The metal is poured at the lowest practical temperature in order to minimize surface cracks and porosity. The pouring temperature can range greatly depending on the casting material; for instance, zinc alloys are poured at approximately 370 °C (698 °F), while Gray iron is poured at approximately 1,370 °C (2,500 °F).
We take all these things into consideration when designing molds for this process. For more information about permanent mold castings.

Choose RH for Your Permanent Mold Casting

RH Metals was founded in 2002 for a group of international metal producers based in North China.The goal was to create a company with a technical and metallurgical background in manufacturing metal and metal parts. We are proud to have effectively served our local and global customers for the past 20 years. We have used our experience and technical expertise to fulfill the requirements of our many satisfied customers across the world wide since then.

CASTINGS

Metal alloy

Steel Castings and Forgings for Industrial Applications

Steel parts, regardless of castings or forgings, offer material characteristics that are required for high strength applications.
Industrial vehicles use many steel castings in the finished products from parts that weigh grams to parts that weigh thousands of tons.
Steel castings and forgings are used by many different industries including:

Heavy Equipment - Construction, Farming & Mining
Machine Tools - Machining, Casting & Plastics Molding
Plant Machinery - Chemical, Petroleum, paper, Sugar, Textile, Steel & Thermal Plants
Electrical Machining Equipment - Motors, Generators, Pumps & Compressors
Hardware - Plumbing Industry Pipes, Joints, Valves & Fittings
Household - Appliances, Furniture, Kitchen & Gardening Equipment

Steel Alloy Characteristics

Steel alloys have different characteristics depending on their elemental makeup, but in general alloy steel is mainly used for industrial applications due to its:

Strength
Hardness
Toughness
Wear Resistance
Corrosion Resistance
Hardenability & Hot Hardness
Machinability and forgeability
And More

Steel Alloy Plating Services

Steel castings and forgings are lower in cost than non-ferrous alloys, but since they are steel, secondary plating or finishing is most often needed to protect parts from corrosion and rust. RH provides a variety of plating and finishing metal options including:

Chrome
Nickel
Tin
Zinc
Powder coating
Painting

Nothing protects the investment you've made in your steel alloy product better than a metal plating, or metal finish from RH Metal.

Steel Alloy Shapes

Extrusions, Drawn Shapes, Laser Weld Fused shapes, and hot/cold rolled shapes

Steel Alloys are also used for many steel shape applications due to their high strength, durability, and versatility. Some of their industrial uses include:

Window & door frames
Door & lock hardware
Pump & valve fittings
Architectural components
Material Handling Equipment (Construction cranes, forklifts, etc.)

GI	HT 100
Material	DIN GG10, JIS FC100
production process	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application scope of GI HT100	Apply to light loading or parts as condition in no specific requirements of friction and wearing. Such as protection shield,cover,lacquer tray,hand wheel,bracket,base plate,weight dropper , small size handle or etc.
GI	HT 150
Material	DIN GG-15, UNS F11401, AISI 20, JIS FC150
production process	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application scope of GI HT150	working scope,medium loading work castings,like engine base,bracket/brace,G/Box housing,cutter holder,lathe bed,bearing seat,operating platform, belt roller, end cover,pump n valve body,tube line,freewheel,motor pedestal or etc.
GI	HT 200
Material :	DIN GG-20, UNS F11201, AISI 30, JIS FC200
production process:	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application scope of GI HT200	to load relative heavy stress and support some rated gas tightness or corrosion attack parts which are comparatively important. Such as gas cylinder,gear, Engine base,flywheel,lathe body,pneumatic sleeve,piston,gearbox,brake wheel,coupling disk,medium pressure valve body and etc.
GI	HT 250
Material :	DIN GG-25, UNS F12401, AISI 35, JIS FC250
production process:	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application scope of GI HT250	to load relative heavy stress and support some rated gas tightness or corrosion attack parts which are comparatively important. Such as gas cylinder,gear, Engine base,flywheel,lathe body,pneumatic sleeve,piston,gearbox,brake wheel,coupling disk,medium pressure valve body and etc.
GI	HT300
Material :	DIN GG-30, UNS F13101, AISI 45, JIS FC300
production process:	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application	Application of GI HT300,heavy duty load,important component castings needs abrasion proof and high air tightness. such like heavy duty lathe,shearing machine,punching machine,bed of self acting lathe,engine base,machine frame,high pressure hydraulic piece,piston ring,heavy duty load gear wheel,cam,liner/bushing, crankshaft of high rating generator, pneumatic cylinder and accessories or etc.
DI	QT400
Material :	DIN GGG-40, UNS F32800, AISI 60-40-18, JIS FCD400
production process:	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application:	Ductile iron application QT400, traction frame of automobile and tractor,nave/hub/drum,clutch and reducer body,plough share,plough leg,atmospheric pressure valve and its accessories, in/out gas pipe of low and high gas feeding pressure cylinder, railway pad, g/b housing, fly wheel or lathe parts.
DI	QT450
Material :	UNS F33100, AISI 65-45-12, JIS FCD450
production process:	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application:	Ductile iron application QT450, traction frame of automobile and tractor,nave/hub/drum,clutch and reducer body,plough share,plough leg,atmospheric pressure valve and its accessories, in/out gas pipe of low and high gas feeding pressure cylinder, railway pad, g/b housing, fly wheel or lathe parts.
DI	QT500
Material :	DIN GGG-50, AISI 70-50-05, JIS FCD500
production process:	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application:	Application of DI QT500, gear of hydraulic pump,valve body,shaft liner,engine bed,bracket,transmission shaft,chain wheel, freewheel,motor frame.
DI	QT600
Material :	DIN GGG-60, UNS F34100, AISI 80-60-03, JIS FCD600
production process:	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application:	Connecting rod,crankshaft,camshaft,pneumatic cylinder, Intake and exhausting valve mechanism,toothed bar/rack for threshing mill,light loading gear,spindle of lathe machine,ball crusher gear shaft,wheel of mine bogie,spindle of mini type hydroturbine, bushing/liner of cylinder and etc.
DI	QT700
Material :	DIN GGG70, UNS F34800, AISI 100-07-03, JIS FCD700
production process:	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application:	SGI QT700 please reference to qt 600
Malleable black core cast iron	KTH350-10
Material :	DIN GTS-35-10, UNS F22200, AISI 32510, JIS FCMB314
production process:	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application:	Cast iron KTH300-06,KTH330-08,KTH350-10,KTH370-12: for manufacturing material of pipeline fittings,low pressure valve,rear axle shell and steering mechanism of vehicle or tractor,machine/tool accessories and etc.
Malleable iron	KTZ450-06,KTZ550-04,KTZ650-02,KTZ700-02.
Material :	DIN GTS-45-06, UNS F23131, AISI 45006, JIS FCMP440 DIN GTS-55-04, UNS F24130, AISI 60004, JIS FCMP540 DIN GTS-65-02, UNS F25530, AISI 80002, DIN GTS-70-02, UNS F26230, AISI 90001, JIS FCMP690
production process:	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application:	The GI no. as KTZ450-06,550-04,650-02,700-02, parts are making request high strength and better corrosion attack. Such as gear box housing,camshaft,crankshaft,connecting rod,piston ring and etc.
GB Standard	ZCuZn33
Material :	ASTM C85400, JIS YBSC3
production process:	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application:	For general structure and anti corrosion parts,flange ,valve pedestal,rack,joystick and copper nut.
	ZCuSn10Zn2
Material :	ASTM C90500, JIS BC3 DIN G- CuSn10Zn
production process:	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application:	For medium load application and the important pipe fittings working under lower velocity. Valve, cock plug, pump body, gear, impeller, warm wheel and etc.
GB Standard	ZCuZn25Al6Fe3Mn3 .
Material :	ASTM C86300, JIS HBC4 , DIN G- CuZn25ZnAl6
production process:	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application:	For heavy working load , corrosion resistant parts, such as strut plate of bridge, nut, bolts, wear plate, sliding block , warm wheel /turbo and etc.
GB Standard	ZG 200-400 (ZG15)
Material :	DIN GS-38, UNS J03000, JIS SC410
production process:	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application:	Not for heavy duty condition parts, such engine bed, G/B housing and etc.
GB Standard	ZG 230-450 (ZG25)
Material :	DIN GS-45, UNS J03101, JIS SC450
production process:	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application:	For various of equipments parts not absorbing heavy stress. Such as bearing cap, bottom plate, valve body, engine bed, profile rack, rolling mill frame, box body, plough leg, anvil or such kind like.
GB Standard	ZG 270-500 (ZG35)
Material :	DIN GS-52, UNS J02501, JIS SC480
production process:	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application:	For flywheel , vehicle hook, functional hydraulic hydro press set, engine frame, cylinder of steam hammer, bearing housing, connecting rod , box body, crank throw, rolling mill frame, transverse beam, cylinder and etc.
GB Standard	ZG 310-570 (ZG45)
Material :	DIN GS-60, UNS J05002, JIS SCC5
production process:	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application:	For high load and long wear durability parts, such as coupling, big gear wheel, cylinder , pneumatic cylinder, machine frame, brake drum, shaft, idler and etc.
GB Standard	ZG 340-640 (ZG55)
Material	UNS J05000, AISI 90-60, JIS SCC5A
production process	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application	For crane gear , coupling, L/T and C/T wheel or bogie, automobile wheel, ratchet, fork head and etc.
GB Standard	ZG50Mn2
production process	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Material	DIN GTS-70-02, UNS F26230, AISI, JIS
Application	For the parts working under condition of high stress and worn heavily, such as high strength gear wheel ,toothed ring , roller and etc.
GB Standard	ZG20Mn
Material	DIN GTS-70-02, UNS F26230, AISI, JIS
production process	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application	For working cylinder of hydraulic press unit,vane, spray nozzle , valve and elbow of waterturbine
GB Standard	ZG20CrMo
Material	DIN GTS-70-02, UNS F26230, AISI, JIS
production process	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application	For gear,bevel gear,high pressure cylinder and etc
GB Standard	ZG35CrMo
Material	DIN GS-34CrMo4, UNS J13048, JIS SCCrM3
production process	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application	For sprocket,excavator supporting wheel ,bearing,gear ring,gear and etc.
GB Standard	ZG42CrMo
Material	DIN GTS-70-02, UNS F26230, AISI, JIS
production process	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application	For high load parts,such as gear ,bevel gear and etc.
GB Standard	ZG50CrMo
Material	DIN GTS-70-02, UNS F26230, AISI, JIS
production process	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application	For damper components,gear wheel,pinion and etc.
GB Standard	ZG30NiCrMo300mm
Material	DIN GTS-70-02, UNS F26230, AISI, JIS
production process	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application	For gear wheel dia. 300mm+
GB Standard	ZG35NiCrMo300mm
Material	DIN GTS-70-02, UNS F26230, AISI, JIS
production process	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application	For gear wheel which dia.300+
Material	DIN G-X6CrNi189, UNS J92600, AISI CF-8, JIS SCS19
production process	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application	Pump body/shell,valve,impeller,vane,pump,pipe fitting,pipe holder,elbow,bracket,hanger
Material	DIN G-X5CrNiNb189, UNS J92710, AISI CF-8C, JIS SCS12
production process	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application	Pump body/shell,valve,impeller,vane,pump,pipe fitting,pipe holder,elbow,bracket,hanger
Material	DIN G-X5CrNiMoNb810, UNS J92900, AISI CF-8M,
production process	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
Application	Pump body/shell,valve,impeller,vane,pump,pipe fitting,pipe holder,elbow,bracket,hanger
GB Standard	ZL101
Material	DIN G-AlSi7Mg, ASTM A03560, JIS AC4C
production process	gravity casting
GB Standard	ZL101A
Material	DIN G-AlSi7Mg, ASTM Al3560, JIS AC4CH
production process	Gravity casting
GB Standard	ZL102
Material	DIN G-AlSi12, ASTM A04130, JIS AC3A
production process	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding
GB Standard	ZL104
Material	DIN G-AlSi10Mg, ASTM A03600, JIS AC4A
production process	Sand casting,resin sand casting,shell mould casting,die casting,gravity casting,investment casting ,laser cutting,gear milling,punching,welding