Casting : Die Casting

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2008-08-13T04:44:09Z

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Pacific Hydraulic Valves

2008-08-13T04:41:33Z

NingBo Pacific Hydraulic Valves Development Co.,Ltd ,is an enterprise including manufacture and internamtional trade,we have several major manufacturering equipments,such as CNC digital lathes,maching centers,high-precision grinders and precision honing machines etc.

Our management has implemented EPR administration model,and obtained a certification of ISO9001:2000 Quality magement System and CE Mark certificate.Our company covers an area of 12000 square meters,8,000 square meters of standard buildings.With professional designers and technicaians to ensure the quality of products and develop new products in hydraulic fields,we formed a market research department to extend our products range required by the market,and we have exported our products to more than 30 countries. Hydraulic Valves,hydraulic Proportional Valves,Hydraulic Pressure Control Valve,Hydraulic Directional Control Valves,Hydraulic Flow Control Valve,Hydraulic Cartridge Valves,Hydraulic Screw-in Cartridge Valves,Hydraulic Motors,Hydraulic Solenoid Valve,Hydraulic Check Valve,Hydraulic Control Valve,Modular Control Valves,Modular Valves,Direct Reducing Modular Valves,Modular Pressure Relief Valves,Modular Check Valves,Double Throttle Check Valves,Hydraulic Accessories,Pressure Relays,LPS-01 Pressure Switch,Piston Pressure Switch

Our products are applied to various engineering machines,like plastic injection machines,shoes manufacturing machines,press equipments,machines tool equipments,metallurgy industy,agriculture machines,ships and other fields,and to provide customized hydraulic systems.We warmly welcome customers come to our company for business cooperation

At our factory, quality control is an active, function of manufacturing. Quality assurance starts the minute raw materials come in the door and continues through every stage of the casting process. We achieve part-to-part consistency, so the last casting is the same high quality as the first. We work to ISO 9001:2000,a standard of excellence that is recognized around the world.To supply qualified castings with reasonable price is our permanent principle. Dear customers, if you have any interesting to our factory, pls feel free to contact with us by email or fax..Hydraulic Valves-hydraulic Proportional Valves-Hydraulic Flow Control Valve-Hydraulic Control Valve-Hydraulic Pressure Control Valve

we assure the best quality to our customers

Pacific Aluminum Die Casting

2008-08-13T04:39:56Z

Ningbo Pacific Casting Machinery Factory products f actory is specialized and engaged in aluminum pressure die casting, zinc die casting, and electric aluminum castings and vehicle spare parts, the production of zinc die casting has been supplied to many factories in China . Meanwhile, our products also cater to the to international buyers with strong competitiveness. Relying on our excellent international practice ,the deep understanding of east and west culture , as well as broad, stable, long-term trade with domestic and foreign customers and efficient quality management system, we are willing to generate mutual benefit, and hand in hand seek communal development with domestic and foreign partners. Die Casting,Pressure Die Casting,Aluminum Die Casting,Alloy Die Casting,Zinc Die Casting,Die Casting Machine Parts,Investment Casting,Aluminum Investment Casting,Carbon Steel Casting,Alloy Steel Casting,Stainless steel casting,Sand Casting,Green Sand Casting,Resin Sand Casting,Iron Sand Casting,Aluminum Casting,Aluminum Casting Alloys,Aluminum Casting Die Process,Aluminum high pressure die casting,Aluminum Pressure Die Casting,Aluminum Gravity Casting,Aluminum Sand Casting,Aluminum Precision Casting,Iron Casting,Ductile Iron Casting,Grey Iron Casting

Ningbo Pacific Casting Machinery Factory mainly deals with aluminuim castings of the following products, covering: metal parts processing, automobile spare parts aluminium castings, aluminium metal mining machinery, , electrical products ,instrumentation aluminium castings, electrical tools, pneumatic tools , and other agricultural machinery.

At our factory, quality control is an active, function of manufacturing. Quality assurance starts the minute raw materials come in the door and continues through every stage of the casting process. We achieve part-to-part consistency, so the last casting is the same high quality as the first. We work to ISO 9001:2000,a standard of excellence that is recognized around the world.To supply qualified castings with reasonable price is our permanent principle. Dear customers, if you have any interesting to our factory, pls feel free to contact with us by email or fax. We can accept the files with the form of Pdf, Jpg, CAD, IGS, STP,Pro-E as well as SOLIDWORKS via email. As soon as we receive your inquiry, we will pay much attention to it, and our experienced engineers will make a quick cost estimate to your inquiry, then will quote our competitive price to you at the earliest time.

we assure the best quality to our customers

About High Pressure Die Casting

2008-05-14T04:51:51Z

The Detail of High pressure die casting 02 Description :

Model No : High pressure die casting 02

Product Name : High Pressure Die Casting

Product Origin : China Ningbo

Brand Name : NingBo YinZhou RenYi Casting Machinery Factory

FOB Port : NINGBO,SHANGHAI PORT

Payment terms:T/T, L/C or negotiate

Contact Person : Nathan

Delivery Lead Time : 25-30days

Form:

About Pressure Die Casting

2008-05-14T04:48:16Z

NINGBO RENYI CASTING MACHINERY MANUFACTURER is one of China professionally manufacturer and dedicated supplier of various castings including investment casting, sand casting and aluminum die casting one.For investment casting, we adopt the method of soluble glass, complex shell, silicasol to make precision casting parts. And for sand casting, we adopt resin sand process to make grey iron and ductile castings. As for die casting, mostly we make the aluminum or alloy aluminum casting parts.

Die casting machine between 250kN to 1000kN. Aluminum casting cast from several grams to kilograms. Supply finish machining process when customer require.

The Detail of Pressure Die Casting 01 Description :

Model No : Pressure Die Casting 01

Product Name : Pressure Die Casting

Product Origin : China Ningbo

Brand Name : NingBo YinZhou RenYi Casting Machinery Factory

FOB Port : NINGBO,SHANGHAI PORT

Payment terms:T/T, L/C or negotiate

Contact Person : Nathan

Delivery Lead Time : 25-30days

More informaiton:http://www.chinese-hisuppliers.com/casting/ or http://www.china-die-casting.com/pressurediecasting/Pressure_Die_Casting.htm

Link:Die Casting,wind generators,Wind turbine,Iron Casting,Aluminum Radiator,Shower Room,Hydraulic Valves,plate rolling machine,pneumatic cylinders,coaxial cable,Electric Winches,Bedroom Furniture

Die Casting Technical Introduction

2008-05-14T04:42:04Z

Die-casting is similar to Permanent mold castings except that the metal is injected into the mold under high pressure of 10-210Mpa (1,450-30,500) psi . This results in a more uniform part, generally good surface finish and good dimensional accuracy, as good as 0.2 % of casting dimension. For many parts, post-machining can be totally eliminated, or very light machining may be required to bring dimensions to size.

Die-casting can be done using a cold chamber or hot chamber process

1.In a cold chamber process, the molten metal is ladled into the cold chamber for each shot. There is less time exposure of the melt to the plunger walls or the plunger. This is particularly useful for metals such as Aluminum, and Copper (and its alloys) that alloy easily with Iron at the higher temperatures.

2.In a hot chamber process the pressure chamber is connected to the die cavity is immersed permanently in the molten metal. The inlet port of the pressurizing cylinder is uncovered as the plunger moves to the open (unpressurized) position. This allows a new charge of molten metal to fill the cavity and thus can fill the cavity faster than the cold chamber process. The hot chamber process is used for metals of low melting point and high fluidity such as tin, zinc, and lead that tend not to alloy easily with steel at their melt temperatures.

Die casting molds (called dies in the industry) tend to be expensive as they are made from hardened steel-also the cycle time for building these tend to be long. Also the stronger and harder metals such as iron and steel cannot be die-cast

Common Alloys in Die Casting

Aluminum, Zinc and Copper alloys are the materials predominantly used in die-casting. On the other hand, pure Aluminum die casting is rarely cast due to high shrinkage, and susceptibility to hot cracking. It is alloyed with Silicon, which increases melt fluidity, reduces machinability. Copper is another alloying element, which increases hardness, reduces ductility, and reduces corrosion resistance.

Aluminum is cast at a temperature of 650 ºC (1200 ºF). It is alloyed with Silicon 9% and Copper about 3.5% to form the Aluminum Association 380 alloy (UNS A03800). Silicon increases the melt fluidity, reduces machinability, Copper increases hardness and reduces the ductility. By greatly reducing the amount of Copper (less than 0.6%) the chemical resistance is improved; thus, AA 360 (UNS A03600) is formulated for use in marine environments. A high silicon alloy is used in automotive engines for cylinder castings, AA 390 (UNS A03900) with 17% Silicon for high wear resistance. Common aluminum alloys for die casting are summarized as follows:

Material	Silicon	Copper	Tensile Strength MPa (ksi)	Properties
AA 380 (UNS A03800)	8.5 %	3.5 %	324 (47)	Fair easy to fill
AA 384 (UNS A03840)	11 %	4 %	331 (48)	Easy to fill
AA 386 (UNS A03860)	9.5 %	0.6 %	317 (46)	Good corrosion resistance
AA 390 (UNS A03900)	17 %	4.5 %	283 (41)	Good wear resistance

Zinc can be made to close tolerances and with thinner walls than Aluminum, due to its high melt fluidity. Zinc is alloyed with Aluminum (4%), which adds strength and hardness. The casting is done at a fairly low temperature of 425 ºC (800 ºF) so the part does not have to cool much before it can be ejected from the die. This, in combination with the fact that Zinc can be run using a hot chamber process allows for a fast fill, fast cooling (and ejection) and a short cycle time. Zinc alloys are used in making precision parts such as sprockets, gears, and connector housings.

Copper alloys are used in plumbing, electrical and marine applications where corrosion and wear resistance is important.

Minimum wall thicknesses and minimum draft angles for die casting are :

Material	Min. Thickness mm (in)	Min. Draft Angle (º)
Aluminum alloys	0.9 mm (0.035 in)	0.5
Zinc alloys	0.6 mm (0.025 in)	0.25
Copper alloys (Brass)	1.25 mm (0.050 in)	0.7

Die-castings are typically limited from 20 kg (55 lb) max. for Magnesium, to 35 kg (77 lb) max. for Zinc. Large castings tend to have greater porosity problems, due to entrapped air, and the melt solidifying before it gets to the furthest extremities of the die-cast cavity. The porosity problem can be somewhat overcome by vacuum die casting

From a design point of view, it is best to design parts with uniform wall thicknesses and cores of simple shapes. Heavy sections cause cooling problems, trapped gases causing porosity. All corners should be radiused generously to avoid stress concentration. Draft allowance should be provided to all for releasing the parts-these are typically 0.25º to 0.75º per side depending on the material.

From:http://www.china-die-casting.com/Die_Casting_Technical_Introduction.htm

Links:wooden toys,auto bearing,automotive bearings,water filters,ball valves,China Manufacturer,China Manufacturers,China Manufacture directory,Seo Web link,Web Link

About Renyi Casting

2008-05-14T04:33:14Z

We can produce castings with kinds of material, such as carbon steel and alloy steel, stainless steel , grey iron, ductile iron, aluminum, brass as well as bronze.Besides, it is also available for us to supply a series of finish steps for the rough casting and metal parts, such as finish machining, welding, heat treating,caseharden, plating, anodizing ,painting etc. Moreover, thanks to our many qualified suppliers for the rubber, plastic injectiong molding,spring, punching,stamping prouducts, that enable us to provide our customers the complete set projects while assemling the correlative products if customers request.

At our factory, quality control is an active, function of manufacturing. Quality assurance starts the minute raw materials come in the door and continues through every stage of the casting process. We achieve part-to-part consistency, so the last casting is the same high quality as the first. We work to ISO 9001:2000,a standard of excellence that is recognized around the world.To supply qualified castings with reasonable price is our permanent principle. Dear customers, if you have any interesting to our factory, pls feel free to contact with us by email or fax. We can accept the files with the form of Pdf, Jpg, CAD, IGS, STP,Pro-E as well as SOLIDWORKS via email. As soon as we receive your inquiry, we will pay much attention to it, and our experienced engineers will make a quick cost estimate to your inquiry, then will quote our competitive price to you at the earliest time.

We sincerely wish we will be your reliable casting supplier at the base of mutual benefit.

Renyi Casting Guarantee as follows:

1. 100% quality manufacturing

2. All facilities are quality certified.

3. We guarantee that our products meet your supplied specifications

4. Extremely competitive pricing

5. Delivery to your port or front door

7. 6-10 week lead times

8. We handle all paperwork

9. Partial container orders

10. Unique tooling options

11. Full range of packaging options from bulk to retail ready Complete testing services available

Renyi Casting Materials

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2008-05-14T04:24:31Z

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