Automotive Bearngs in china

Posted at 11:01 PM, 8/12/2008

A professionally managed company, we are a reputed manufacturer and exporter of largest range of automotive bearings and industrial bearings including taperd roller bearings, ball bearings, cylindrical bearings, needle roller bearings, spherical clutch bearings, pillow block (UCP/UCF), king pin, water pump bearings, Wheel Bearings ,Clutch Release Bearings ,Tensioner bearings ,automotive water pump bearings in India.

With an experience of over a decade, we have accustomed the trends, needs and wants of the customers and the industry. Our commitment to excellence has taken us many miles ahead of our competitors. We have a worldwide presence and have been exporting to the international markets.

Pacific is a well- known brand with good quality.It is highly appreciated and welcomed by many users all over the world, specially in auto bearings users.

To enter the development and production of auto parts, specializing in auto bearings.Meanwhile, many special testing equipments are adopted to inspect its products, t o ensure a reliable quality, and a group of professional engineers are working in our company to meet your special demands.

But it was not until the bicycle and the motor car were invented, together with machines which could grind the metal balls precisely and accurately, that ball bearings were able to be used in large quantities.

We Focus On

Technological Upgradation
To remain competitive and meet customers' expectations, we lay great emphasis on the continuous upgradation of products and related technologies. We also endeavor to develop new products. This commitment to is reflected in our involvement in the development of customized products with flawless performance.Automotive Bearings-Ball Bearings -Auto Bearings-Industrial Bearings-Wheel Bearings-wind generators-wind turbine 

lost wax casting sometimes

Posted at 10:55 PM, 8/12/2008

lost wax casting sometimes called by the French name of cire perdue, is the process by which a bronze is cast from an artist's sculpture. An ancient practice, the process today varies from foundry to foundry, but the steps which are usually used in casting small bronze sculptures in a modern bronze foundry are generally quite standardized.

lost wax casting process

1.Sculpting. An artist creates an original artwork from wax, clay, or another material. Wax and oil-based clay are often preferred because these materials retain their softness.

2.Moldmaking. A mold is made of the original sculpture. Most molds are at least two pieces, and a shim with keys is placed between the two halves during construction so that the mold can be put back together accurately. Most molds of small sculptures are made from plaster, but can also be made of fiberglass or other materials. To preserve the fine details on the original artwork's surface, there is usually an inner mold made of latex, vinyl, or silicone which is supported by the plaster part of the mold. Usually, the original artwork is destroyed during the making and initial deconstruction of the plaster mold. This is because the originals are solid, and do not easily bend as the plaster mold is removed. Often long, thin pieces are cut off of the original and molded separately. Sometimes, especially in the case of large original (such as life-size) sculptures, many molds are needed to recreate the original sculpture.

3. Wax. Once the plaster and latex mold is finished, molten wax is poured into it and swished around until an even coating, usually about 1/8 inches thick, covers the entire inner surface of the mold. This must be done in several layers until desired thickness is reached.

4. Removal of wax. This new, hollow wax copy of the original artwork is removed from the mold. The artist may reuse the mold to make more wax copies, but wear and tear on the mold limit their number. For small bronze artworks, a common number of copies today is around 25.

5.Chasing. Each hollow wax copy is then "chased": a heated metal tool is used to rub out all the marks which show the "parting line" or "flashing" where the pieces of the mold came together. The wax is then "dressed" to hide any imperfections. The way the wax looks at this stage, is what it will look like when it is cast. Wax pieces that were molded separately can be heated and attached; foundries often use "registration marks" to indicate exactly where they go. v

6. Spruing. Once the wax copy looks just like the original artwork, it is "sprued" with a treelike structure of wax that will eventually provide paths for molten bronze to flow, while allowing air to escape. The carefully-planned spruing usually begins at the top with a wax "cup," which is attached by wax cylinders to various points on the wax copy.

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

Piston Pressure Switch

Posted at 10:51 PM, 8/12/2008

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

Gearbox Housing Parts

Posted at 1:42 AM, 5/14/2008

China Ningbo Yinzhou Renyi Casting Machinery Factorty is one of China professionally manufacturer and dedicated supplier of various castings including mainly supply part, gearbox housing part, 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. 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. We sincerely wish we will be your reliable casting, mainly supply part, gearbox housing part supplier at the base of mutual benefit.

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

Pressure Die Casting

Posted at 1:39 AM, 5/14/2008

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.

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

Die Casting For Motorcycles Parts

Posted at 1:36 AM, 5/14/2008

NingBo YinZhou RenYi Casting Machinery Factory 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

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How Die Casting Work?

Posted at 1:30 AM, 5/14/2008

Die casting is frequently referred to as the fastest route between raw material and finished product.

Because of the differences in the melting temperatures of various die casting alloys, two methods of inserting the molten metal into the die cavities are used. These are referred to as hot chamber and cold chamber machines.

Hot chamber

Hot chamber or plunger machines are used mainly for zinc alloys. With modern technology, this process is increasingly being used for magnesium. The hot chamber process is a preferred die casting method due to its high rate of productivity. However, it cannot be used for some high melting point alloys or for those alloys which attack the steel working parts of the machine.

Operating sequence for the hot chamber die casting process:

1. Die is closed and gooseneck cylinder is filled with molten metal.

2. Plunger pushes molten metal through gooseneck passage and nozzle and into the die cavity. Metal is held under pressure until it solidifies.

3. Die opens and cores, if any, retract. Casting stays in ejector die. Plunger returns, pulling molten metal back through nozzle and gooseneck.

4. Ejector pins push casting out of ejector die. As plunger uncovers inlet hole, molten metal refills gooseneck cylinder

Cold chamber

Cold chamber machines minimize contact between the alloy to be cast and steel machine parts which allows the processing of high melting temperature alloys. Its primary use is for aluminum, brass, and larger magnesium die castings.

Operating sequence for the cold chamber die casting process:

1. Die is closed and molten metal is ladled into the cold chamber cylinder.

2. Plunger pushes molten metal into die cavity. the metal is held under high pressure until it solidifies.

3. Die opens and plunger follows to push the solidified slug from the cylinder. Cores, if any, retract.

4. Ejector pins push casting off ejector die and plunger returns to original position

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

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