Archive for May, 2009

About Ningbo Ruyi Foundry Co., Ltd.

Monday, May 25th, 2009

In March of year 2004, Ningbo Ruyi Casting Co., Ltd. took the ownership of Fenghua Xinxin Casting Co., Ltd. and moved the whole metal melting and pouring production line to the production site of Ruyi forming an updated foundry with excellent technique and integral team. Iron Casting

Technique and capacity:

Ningbo Ruyi Foundry Co., Ltd. is your reliable source for Ductile iron casting, Grey iron casting.The molding process covers Resin Chemically Bonded Sand Cast, Resin Shell Cast, and Green Sand Cast. We can also offer the advantage brought by our strategic long-term partner with diversified technique( Investment casting for steel, ,carbon steel,stainless steel, pressure die casting and gravity casting for aluminum, alloy, aluminum & zinc , as well as precision machining with general machine tool and CNC machines) so as to make customization easy to carry out . Our integral service concept brought us high praise from our customers from all over the world. Most of our products are exported to Canada, USA, and Europe Spain , Italy, Switzerland, Sweden, and so on etc. and win good reputation among our customers .

Based on the land of size 6000 square meters, the foundry’s monthly iron casting output capacity is up to 350 tons, and 80% of the produced castings are sold to overseas markets.

Business scope covers:

Machinery Parts ,Automotive accessory,Valve Parts, Electric power transmission,Marine Parts ,Railway parts,Electric motor body & accessories,Gear Cases & accessories,Chair Parts,Air compressor Parts & accessories,Manhole cover parts ,Flange, Tappet parts ,Sewing machine parts & accessories,Construction Parts & accessories,Mining accessories,Gardening Parts & Accessories,Machine tools industries,Radiator parts ,cylinder head & body ,Counterweight items,Rotor housing.

Certificate and Customization:

The foundry conforms to international standards and offers material analysis, heat treatment, non-destructive testing, proof and precision machining. With great efforts and carrying out our policy continuously which is to produce castings to meet your individual requirements, as well as monitoring each stage of production to guarantee high quality, we finally got certified by ISO9001:2000.

The foundry is located in the seaport city of Ningbo, China, it has convenient inland transportation and there are many sea-freight carriers towards different countries in the daily base. We cordially welcome customers from both domestic and overseas!


Steel Casting


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CNC machines are based on blueprints of a whole structure

Monday, May 18th, 2009
Being a CNC operator may seem a little too easy but take a look at the requirements from companies and you’ll think twice about the difficulty level of being a CNC operator. Being a CNC operator takes a lot more than just being able to handle long hours of staring at the monitor or creating an input stack for the programs. What it means is that you have to have outstanding programming capabilities and at least basic machining knowledge. Job Requirements A CNC operator has to be knowledgeable about blueprint reading. This is because, basic design concepts and construction is hinged heavily on blueprints. Furthermore, the components that are being manufactured by companies that have CNC machines are based on blueprints of a whole structure. Therefore, if you do not know how to read blueprints, you won’t know what to program the machine to do. Another thing that a CNC operator has to have is familiarization with machine operations. If the operator does not know which machine tools are for which job, or how fast the machine can work, or what the rate of feed is for the machine, or even the depth of the cut needed for the operation, then you wouldn’t be productive and the operation would be a failure. The most obvious thing that an operator would have to know would be the general operating characteristics of the machine.
To produce hubs, rods, bushes, pulleys and shafts, CNC turning is utilized where the lathe generates materials after inserting the single cutter point in to the material turning. The procedure of cutting is executed through a cutting tool which is applied either parallel or at right angle to the axis, of work piece. The tool may also be fitted at an angle relative to the work piece axis for the machining angles and tapers. The work piece may be of any cross section, but the machine surface should be straight and tapered.
There are various shapes available in CNC like pointed, simple, radius with profile added with threaded surface, curve and fillet. The CNC machining is more economical than the CNC milling for producing the actual form through CNC turning. The material used for CNC turning possesses various qualities like material of work piece should be firm and can be of solid plastics. For the short running procedure of the mill, arrangements or alternative machine should be kept. CNC turning reduces the cost by minimizing the design elements.

CNC turning procedure is done through applying pressure on the work piece or the weaker material to form the flexible shapes of the material. Sometimes through CNC, the cut surface is formed by applying the helical feed as it results in rotation. The cutting procedure through which the work piece is eliminated from a material block by the help of the rotation of the tool is known as CNC milling. The work piece can rotate in perpendicular or circular way to produce different shapes and sizes. The cutting tool generally rotates in the CNC milling at an axis in a perpendicular form on the podium to generate various structures.


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Shell Mold Casting

Tuesday, May 12th, 2009

Benefits of Shell Mold Casting:

1. Shell molding process offers better surface finish.

2 Shell molding process offers better dimensional tolerances

3 Shell Molding Process offers higher throughput due to reduced cycle times.

A heated metal pattern is covered with a mixture of sand and thermoset plastic. This causes a skin of sand mixture to adhere to the pattern. This skin is removed from the pattern to form the “shell mold”. The two halves of the shell mold are secured together and the metal is poured in the shell to form the part. Once the metal solidifies, the shell is broken.

The materials that can be used with this process are cast irons, and aluminum and copper alloys. Typical parts made with this process are connecting rods, gear housings, lever arms etc.

· The basic process for these molds is,

1. Create two mating patterns of desired shape.

2. Coat the molds with a shell (sand and binders, such as a resin) until desired thickness and other properties are obtained.

3. Cure the molds and remove the patterns.

4. The mold halves are mated and held firm while metal is poured.

5. The final part(s) is removed.

Mold Shell Casting

This technique can be very economical.

· Special care must be taken to assure venting for gasses, as the mold media is less porous.

· This method can easily use cores and chills to make complex molds.

· Graphite molds can be used for materials that would normally react with other materials used for the molds.

Green Sand Casting Resin Sand Casting


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Ductile iron casting

Wednesday, May 6th, 2009

Ningbo Ruyi Foundry Co.,Ltd. is your reliable source for Ductile iron casting, Grey iron casting and you can also entrust us for Stainless steel casting, Aluminium alloy casting and Refractory steel casting. The moulding process covers Resin Chemically Bonded Sand Cast, Resin Shell Cast, and Green Sand Cast . Based on the land of size 6000 square meters , the foundry’s monthly iron casting output capacity is up to 350 tons, and 80% of the produced castings are sold to overseas markets .Our castings mainly apply to Machine tools industries Pumps industries Gas steam valve industries Automobile industries Air compressor industries Gear cases accessories Electric motor body accessories Other products.

Iron casting Stainless Steel Casting Aluminum Casting

Iron casting stainless steel casting Aluminum Casting


We are a Chinese specialized ISO-9002 certified manufacturer and exporter. Our products are mechanical machined parts based on steel castings (including sand and lost wax casting), iron castings, aluminum castings etc. All of our products are manufactured according to the drawings or samples from the clients of USA and some other countries. Since the establishment of the company, our current products have been exported continually to USA, Europe, Japan and Australia etc. and gained the recognition of foreign clients due to their excellent quality, punctual delivery time and preferential price. Also we are supplying pump body, impeller and motor bracket to our American pump assembly client.
Now our production capacity for various castings are 5000 tons annually.


ductile iron casting
resin sand casting which we produce have different kinds of size and standards .If you give me the corresponding drawings , we will give you the satisfied products because we are a foundry company which processing with supplied drawings and we have a high technology and good staffs.
The material is gray iron and graphit iron ductile iron.


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