Best Quality Sandry Vacuum Process Casting Molding Machine

Best Quality Sandry Vacuum Process Casting Molding Machine

The history

Vacuum seal modeling technology (also called V method modeling) is the 1970s Japan invented and the successful development of a special casting method.

The technology

Vacuum process cast molding is a new metal molding technology and only adopt dry sand (no water, binder, tagger). It's automatic with a electric control system.

1. Make use of the heated EVA film covering on the model to seal flask.

2. Take out the air with vacuum pump. The sand mould is tightened by pressure difference.

3. Pouring to form the casting.

4. The course is physics molding way. Release little dust, so it's eco-friendly. And the sand recovery rate can reach at 95%.

The technology process

Step 1: The pattern (with vent holes) is placed on a hollow carrier plate.

Step 2: A heater softens the .003" to .008" plastic film. Plastic has good elasticity and a high deformation ratio.

Step 3: Softened film drapes over the pattern with 200 to 400 mm Hg vacuum acting through the pattern vents to draw it tightly around the pattern.

Step 4: The flask is placed on the film-coated pattern. Flask walls are also a vacuum chamber with the outlet shown at right.

Step 5: The flask is filled with dry, unbonded sand. A slight vibration compacts sand to maximum bulk density.

Step 6: A sprue cup is formed and the mold surface leveled. The back of the mold is covered with unheated plastic film.

Step 7: Vacuum is applied to the flask. Atmospheric pressure then hardens the sand. The vacuum is released, pressurized air is introduced into the carrier and the mold is stripped.

Step 8: The cope and drag assembly form a plastic-lined cavity. During pouring, molds are kept under vacuum.

Step 9: After cooling, the vacuum is released and free-flowing sand drops away leaving a clean casting, with no sand lumps. The sand is cooled for re-use.

Main equipments

Vacuum stabilized system: Vacuum pump, Vacuum meter, Surge tank, dust removal tank, steam separator

Molding system: Die shoe, Automatic roast Laminator, sand molding box, Vibrating table, Manipulator, Die lifter.

Sand reclamation system: Sand screen, Elevator, Conveyor, sand bin

Advantages of this system

1. Take good use of sand, the material recovery rate is 95%

2. Low cost

3. Good casting dimension accuracy

4. Save labor cost

5. Keep clean working environment

6. eco-friendly

7. Save material

8. Reduce the labor intensity

Casting pictures

Packing: Nude packing and bulk packing

Shipping: If our clients do not have a certain port, we recommend Qingdao.

1. We do not provide sample, bcause our products are machines which are large and complicated.

2. We do provide special service or customized service, we can design the layout of your workshop.

3. We can send out clients to your place to help your installation and debugging. Engineers are available to go abroad.

Qingdao Shengmei Machinery Co., Ltd is specialized in producing vacuum process casting machine, resin sand reclamation and molding machine, lost foam casting machine, dust collector, shot blasting machine and sand blasting machine. We always bear "Honesty is the source and we should produce boutique" in mind and insist on the business policy of " quality of survival, innovation and development, to manage for efficiency". With first-class technology, first-class products and first-class service, we wholeheartedly cooperate with you.