RCS Products

RCS For Iron Casting

RCS For Small Iron Casting

RCS For Aluminium Casting

RCS For Bronze Casting

RCS For Brass Casting

RCS For Steel Casting

With the expertise of Asahi Yukizai Corporation, Japan, AMM has more than 700 formulations of Resin Coated Sand suiting every business application. We use specific resins with high quality silica, quartz and artificial sand to address problems faced by users (Solid and Hollow Cores/Moulds), and are continuously striving to make a win-win solution for both.

AMM strongly believes in customization. Hence AMM can supply “CUSTOM-MADE RCS” based on customer requirements. 

AMM has adopted strong & robust systems for procuring of raw materials like sand, resin etc. The characteristics of high quality sand used by AMM are as follows:

Silica Quartz (Under Development) Artificial (Under Development)
Silica content >99%
Silica Content >99.51%
Alumina content >60%
Clay content <0.1%
Clay content <0.05%
Clay content = 0%
Semi-Angular
Angular
Round
AFS 35 - 75
AFS 35 – 75
AFS 35 – 75
However, only sand is not sufficient to solve all the problems and fulfil the challenges faced during the casting process. To address the defects, AMM uses different types of solid phenolic resins imported from the plants of Asahi Yukizai Corporated located in Japan & China.
Resins Solid Cores Hollow Cores
General Resin
Basic Properties for Binding
Basic Properties for Binding
High Strength
Low Gas
Increased Wall Thickness for Uniformity
Anti Sand Fusion
Excellent Surface Finish
Excellent Surface Finish
Low Expansion
Lower Veining
Lower Veining
High Melting Point
Good Filling
Low Gas and Reduced Wall Thickness
Anti Peel Back
No Peel Back
No Peel Back

and many more..

About Our Resin Coated Sand

Resin coated sand (RCS) is pre-coated sand which is used in shell casting and finds application in casting of products calling for high precision and better surface finish. Basic raw materials used are silica sand, resin (i.e. Phenol Formaldehyde) and hexamine hardener. The material is used to provide smooth surfaces and precise dimensions of the components manufactured. Resin coated sand is primarily used in casting molds and cores using the shell casting process.
Resin coated sand finds its application in the casting of auto components such as, engines, cylinders, brakes, chassis, pistons, cam follower, camshafts; hydraulic industry, irrigation pumps, submersible pump etc.

AMM  Resin Coated Sand is being continuously developed and improved with a goal of having 0% defects in castings.

Some of the prominent problems faced by foundaries:

• Gas Defects
• Sand Fusion
• Surface Finish
• Collapsibility or Shake out at the time of De-coring
• Strength and many more

Properties Al. Castings Iron Castings Steel Castings

Flowability

Excellent
Excellent
Excellent

Collapsibility

Good
Good
Good

Gas Defects

Lowered
Lowered
Lowered

Surface Finish

Excellent
Excellent
Excellent

Strength Type

High
High
High

Loss on Ignition

Lower
Lower
Lower

Wall Thickness

Uniform
Uniform
Uniform

Expansion Type

Lower
Lower
Lower

Need of Coating

Can be avoided
Can be avoided
Can be avoided

AFS Range

35 – 75
35 – 75
35 – 75

Indicative Data for Reference

Low Gas Evolution with Higher Strength

Item AMM-RCS Other Indigenous RCS
Bending Strength
70 kgf/cm2
54 kgf/cm2

LOI

2.6%
4.4%

Gas Quantity

15 cc/g
22 c/g

Flowability

Item AMM-RCS Other Indigenous RCS
Shell Core Weight
46.6 g
44.3 g
Shell Core Volume
30 cm3
30 cm3
Packing Density
1.55 g/cm3
1.48/cm3