Investment Casting Foundry | Sand Casting Foundry from China

Stainless Steel Castings, Grey Iron Castings, Ductile Iron Castings

China Cheap price Shell Mold Casting Parts - Custom Pre-Coated Resin Sand Shell Casting – RMC Foundry

Short Description:

Casting Metals: Duplex Stainless Steel

Casting Manufacturing: Lost Wax Investment Casting

Application: Open Impeller

Weight: 9.60 kg

Heat Treatment: Annealing + Solution

 

Super duplex stainless steel castings from China investmnet casting manufacturer with OEM custom engineering services based on your requirements and drawings. Our engineering experts are happy to help you develop the optimum solutions for your company with Chinese price level but reliable quality.

 


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We have been commitment to supply the competitive price ,excellent products and solutions high-quality, at the same time as fast delivery for Stainless Steel Investment Casting Company , Shell Mold Casting Manufacturer , Furan Resin Sand Casting , We warmly welcome customers, business associations and friends from all over the world to contact us and seek cooperation for mutual benefits.
China Cheap price Shell Mold Casting Parts - Custom Pre-Coated Resin Sand Shell Casting – RMC Foundry Detail:

Coated sand shell castings made of gray cast iron, ductile cast iron and cast alloy steel in China casting company.

During shell mold casting, firstly the foundry need to make the patterns according to the customer’s requirements and drawings, as well as considering the casting allowance. Before making the casting mould and core, the coated sand have been covered with a solid resin film on the surface of the sand particles. The coated sand is also called shell (core) sand. The technological process is to mechanically mix powdered thermosetting phenolic tree with raw sand and solidify when heated. It has been developed into coated sand by using thermoplastic phenolic resin plus latent curing agent (such as urotropine) and lubricant (such as calcium stearate) through a certain coating process. When the coated sand is heated, the resin coated on the surface of the sand particles melts. Under the action of the methylene group decomposed by the Maltropine, the molten resin rapidly transforms from a linear structure to an infusible body structure so that the coated sand is solidified and formed. In addition to the general dry granular form of coated sand, there are also wet and viscous coated sand.

Shell mold casting process has the following characteristics
1) It has suitable strength performance. It can meet the requirements for high-strength shell core sand, medium-strength hot-box sand, and low-strength non-ferrous alloy sand.
2) Excellent fluidity, good moldability of the sand core and clear outline, which can produce the most complex sand cores, such as water jacket sand cores such as cylinder heads and machine bodies.
3) The surface quality of the sand core is good, compact and not loose. Even if less or no coating is applied, better surface quality of castings can be obtained. The dimensional accuracy of castings can reach CT7-CT8, and the surface roughness Ra can reach 6.3-12.5μm.
4) Good collapsibility, which is conducive to casting cleaning and improving product performance
5) The sand core is not easy to absorb moisture, and the strength of long-term storage is not easy to decrease, which is conducive to storage, transportation and use

Manufacturing processes of coated sand mold (core) making for shell moulding casting:
1. The basic process of manufacturing coated sand mold (core) is: flip or blow sand→crust→sand discharge→harden→core (mold) and so on.
1) Turn over or blow sand. That is, the coated sand is poured on the shell mold or blown into the core box to manufacture the shell or shell core.
2) Encrustation. The thickness of the shell layer is controlled by adjusting the heating temperature and holding time.
3) Sand discharge. Tilt the mold and the core box to make the unreacted coated sand fall from the heated shell surface, and collect it for reuse. In order to make it easier to remove the unmelted coated sand, if necessary, a mechanical method of shaking back and forth can be adopted.
4) Hardening. In the heating state, in order to make the thickness of the shell more uniform, make it contact with the surface of the heated shell within a certain period of time to further harden.
5) Take the core. Take the hardened shell shape and shell core out of the mold and core box.

 

Pre-coated Sand Casting Mold
shell mould casting mold


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China Cheap price Shell Mold Casting Parts -
 Custom Pre-Coated Resin Sand Shell Casting  – RMC Foundry detail pictures


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Our commission would be to serve our customers and clientele with very best excellent and aggressive portable digital products for China Cheap price Shell Mold Casting Parts - Custom Pre-Coated Resin Sand Shell Casting – RMC Foundry, The product will supply to all over the world, such as: Hamburg , Kuala Lumpur , Denver , We critically promise that we deliver all the customers with the best quality solutions, the most competitive prices and the most prompt delivery. We hope to win a resplendent future for customers and ourselves.
  • We have been appreciated the Chinese manufacturing, this time also did not let us disappoint,good job!
    5 Stars By Edwina from Albania - 2017.09.29 11:19
    The company has a good reputation in this industry, and finally it tured out that choose them is a good choice.
    5 Stars By Mabel from Japan - 2018.09.19 18:37