Index > Process > V-process

● What's v-process casting technology  

1. Film heating: using special film heat to heat the EVA film to certain temperature.  2. Film covering: turn on the pattern vacuum, put the soften film on the pattern surface. The film will covered on the pattern surface tightly underthe effect of vacuum. 3.Coating spraying: spraying the coating through coating spraying system on the film surface. Using drying machine to dry the coating.

4.Flask setting: put the empty flask on the pattern. 5.Sand filling: vibrating table move to sand filling position. Turn on the sand filler, sand flow into the empty flask and under vibration to get high density mold. 6.Film sealing: put another piece of film on the back surface of the mold. Turn on the vacuum, the mold become hard.

7.Stripping: after get hard mold, using special lift machine or manapulator for stripping and close the mold on the pouring area. 8.Pouring: pouring under vacuum pressure. Then keep certain time of vacuum. After keep vacuum pressure,  9.Shaking out: turn on the vacuum, move the mold to shaking out area, then turn off the vacuum. The sand flow freely and back to sand hopper through sand preparation system.

● Characteristics& Advantages of v-process casting technology

  1. 1.V-process using dry sand without any chemical binder, under the vaccum pressure to get stable mold;
  2. 2.No chemical binder consumption can reduce the production cost;
  3. 3.No pollution, environmental friendly;
  4. 4.Excellent surface quality (Ra12.5);
  5. 5.High dimensional accuracy;
  6. 6.Suitable for all kinds of metal materials;

●Typical castings cases by v-process casting technology

  1. 〓 Counterweight

  2.           Material: HT150-HT200

              Weight: 500kg-6000kg

              Molding speed: 4-7 molds/hr      



    〓 Swing bolster& side frame     

     Material: cast steel

     Weight: 300kg-600kg

     Molding speed: 3-6 molds/hr     

     〓Wear resistant products                                                                  〓Heat resistant products                                     

     Material: high manganese steel/high chrome steel/alloy steel    

     Weight: 50kg-5000kg

     Molding speed: 3-6 molds/hr 

            Material: alloy steel                                         


            Molding speed: 3-5 molds/hr


● Typical castings by v-process casting technology