Investment Casting Foundry | Sand Casting Foundry from China

Stainless Steel Castings, Grey Iron Castings, Ductile Iron Castings

Best quality Steel Shell Mold Casting Foundry – Custom Pre-Coated Resin Sand Shell Casting – RMC Foundry

Short Description:


Product Detail

Product Tags

Related Video

Feedback (2)

Along with the "Client-Oriented" enterprise philosophy, a rigorous high-quality control process, superior production products along with a robust R&D group, we constantly deliver premium quality products, exceptional solutions and aggressive costs for Carbon Steel Shell Casting , Steel Foundry , Aluminium Alloy Gravity Casting , Sincerely hope we are growing up together with our prospects all over the environment.
Best quality Steel Shell Mold Casting Foundry – Custom Pre-Coated Resin Sand Shell Casting – RMC Foundry Detail:

Coated sand shell casting in China casting company.

During shell mold casting, firstly we 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.

Compared with other resin sand, coated sand casting 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


Product detail pictures:

Best quality Steel Shell Mold Casting Foundry – Custom Pre-Coated Resin Sand Shell Casting  – RMC Foundry detail pictures


Related Product Guide:

Our primary intention should be to offer our clientele a serious and responsible enterprise relationship, delivering personalized attention to all of them for Best quality Steel Shell Mold Casting Foundry – Custom Pre-Coated Resin Sand Shell Casting – RMC Foundry, The product will supply to all over the world, such as: Mombasa , Cairo , Seattle , As operation principle is "be market-oriented , good faith as principle, win-win as objective", holding on "customer first, quality assurance, service first" as our purpose, dedicated to provide the original quality, create excellence service , we won the praise and trust in the industry of auto parts. In the future, We will provide quality product and excellent service in return to our customers , welcome any suggestions and feedback from all over the world.
  • The company leader recept us warmly, through a meticulous and thorough discussion, we signed a purchase order. Hope to cooperate smoothly
    5 Stars By Lorraine from New Zealand - 2018.12.28 15:18
    Superb technology, perfect after-sales service and efficient work efficiency, we think this is our best choice.
    5 Stars By Catherine from Irish - 2017.06.25 12:48