Centrifugal Casting Technology & Molding               

                                                                                                                                             Office Tele: (813) 699-4022, Fax: (813) 960-9660

Email: info@cctm-usa.com

Services

Services include technology transfer of centrifugal casting processes (ferrous and non-ferrous castings), coating, and equipment:

 

1.  New centrifugal casting product development
2.  Centrifugal casting defects diagnoses
3.  Microstructure and grain size control
4.  Segregation control
5.  Thermal crack prevention
6.  Centrifugal casting equipment improvement and maintenances
7.  Centrifugal casting process and equipment commissioning
8.  Mold design and manufacturing
9.  Mold coating application
10.  Mold maintenance and repair
11.  Computer simulation of centrifugal casting process by FEM (Finite Element Method)
12.  Casting upper stream know-how such as melting and treatment of molten metal
13.  Casting downstream know-how such as casting shakeout and heat treatment and casting machining
14.  Casting repair
15.  Casting mechanical property testing, bimetal bonding testing, hardness measurement.


The services cover all the products in three basic centrifugal casting processes:

 

 

1.  True Centrifugal Casting

True centrifugal casting is a method in which a mold spins about the horizontal or vertical axis and the shape of the mold determines the outside shape of the casting.  The inside contour is determined by the free surface of the liquid metal during solidification.  The wall thickness is determined by the amount of metal poured into the mold.

 

 

 

Typical examples of products made using true centrifugal casting are:

Ductile iron water or gas pipes, gray iron soil pipes, heat resistant steel reformer tubes, steel pressure pipes, gray iron or stainless steel cylinders, sleeves, tapered or straight bushings, alloy seal rings, bimetal brake drums, Babbitt lining of bearing shells, varies bimetal steel mill rolls, bimetal or composite coal pulverizing rolls, ball valve balls, etc. 

 

 

2.  Semi-Centrifugal Casting

 

Using this process, molds and the casting are usually spun about the same vertical axis, but the casting may not have a free inner surface formed by the centrifugal force.  Most parts that are symmetrical about a centerline can be cast.  Molds can either be permanent steel, graphite or sand-lined flasks.  Depending on the part, cores may or may not be used.  typical examples of semi-centrifugal castings are gear blanks, pulleys, wheels, etc, which all have spokes and rings.

 

1.  Vertical machine spinning shaft; 2. Mold clamp; 3.  Drag; 4 Flask; 5. Cope; 6. Pour cup; 7. Core; 8. Core; 9. Riser; 10. Casting

3.  Centrifuge Casting

The spacing of separate shaped castings about a central downsprue, which forms the axis of rotation, is called centrifuge casting.  Sand molds in flasks are most often used for the this type of casting.  Centrifuge casting is usually reserved for castings that are difficult or impossible to feed by static casting methods, such as aluminum or copper motor rotors, hammers, balls.

 

 

Personal Reference

The technology transfer is under the guidance of Dr. Sufei Wei, the owner of the company, and the world well-known metallurgist and foundry engineer for centrifugal casting industry.  He obtained his bachelor's and master's degrees in Metallurgy at Wuhan University of Science and Technology (WUST), China, and his PhD in Manufacturing (Metal Casting and Machinery) at Missouri University of Science and Technology-Rolla (MUST, formerly Univ. of Missouri-Rolla), USA.

Expert Experiences

  • Ten years teaching and research work in metallurgy and permanent and sand mold casting at WUST & MUST.

  • Technology manager at Centrifugal Casting Machine Co in Tulsa, Oklahoma, USA since 1998.

  • Decades performing commissioning and technical services in hundreds of centrifugal casting foundries in the world.

  • Hands-on experience in centrifugal casting molding, machine and mold design, manufacturing, and maintenance.

Dr. Sufei Wei at an Exhibition