Electrical upsetting Preliminary molding process

  Product category: Large-sized engine valve 
Manufacturing Method: Electrical Upsetting

Product Description
 Large-sized engine valve for ship main engine valve was usually manufactured by using Free Stretched Forming Method, and the whole quantity was imported before. 
 KSP has successfully developed the large-sized engine valve to which Electrical Upsetting was applied for the first time in the world, and has been appointed "Venture Company" by Korean goverment. The utility model of its own Electrical Upsetting forming facility has been registered. KSP expects this newly developed product to be a substitution for the one currently imported, and its market to continue expanding all over the world.
 ※ A current supplier to Hyundai Heavy Industry Co., Ltd. (from Oct. 2002)

 Highlights of Electrical Upsetting
 Compared with Free Stretched Forming, followings are features of Electrical Upsetting : 
 - Excellent continuity of metal flow
 - No breakdown of metal despite of internal stree
 - Excellent metal properties are obtained by the use of rod or bar, instead of Ingot or Billet
 - Price competitiveness obtained by minimizing the material loss rate for the costly heat resistant super alloy, and the cost of metal finishing operations
 - Excellent grain size, hardness, and life span compared with imports
 
 
 
Prime products

 
Valve for middle-sized engine 
- Inhalation valve, exhaust valve and seat ring of diesel engine for ship generator
 - Valve and seat ring for inhalation, leak tightness, explosion, and exhaust of combustor chamber
 - High durability and high corrosion resistance even under high temperature and high pressure circumstance
 - Satisfying customer needs with its diverse product line
 
  
 
Valve for middle-sized engine  
- Main engine exhaust valve spindle for ship propulsion
 - For leak tightness and exhaust of combustor chamber
 - High metallic property is required for durability and high corrosion resistance even under high temperature and high pressure circumstance
 - Successfully developed by Electrical Upset methods for the first time in the world. 
 - Won approval by WinGD
 
 

Characteristics

  For buildup welding in special positions where abrasion resistance, heat resistance, corrosion resistance, and durability are required The optimum prices & fastest delivery guarantee 
 All types of engine valves are offered at KSP Metal surface treatment such special material gilding, HVOF coating and nitrification can be applied. 
 
 

Valve product line

Large-sized engine valve

  WinGD, AKASAKA, DAIHATSU, HANSHIN, FUJI, MAKITA, MATSUI, MITSUBISHI, 
 NIIGATTA, ITO, ETC  
 
Product drawing