Investment Casting Foundry | Sand Casting Foundry from China

Stainless Steel Castings, Grey Iron Castings, Ductile Iron Castings

Good Quality Stainless Steel Precision Casting Manufacturer - Grey Cast Iron Sand Casting Part – RMC Foundry

Short Description:


Product Detail

Product Tags

Related Video

Feedback (2)

We also offer product sourcing and flight consolidation services. We've got our personal factory and sourcing office. We can easily present you with almost every style of merchandise linked to our merchandise range for Carbon Steel Casting Company , Nodular Iron Casting , Metal Sand Casting , We always regard the technology and prospects as the uppermost. We always function hard to make terrific values for our prospects and give our customers far better products and solutions & solutions.
Good Quality Stainless Steel Precision Casting Manufacturer - Grey Cast Iron Sand Casting Part – RMC Foundry Detail:

Grey cast iron products by sand mould casting process and CNC machining.

Grey cast iron is named after the gray color of the fracture it forms. The gray cast iron is used for housings where the stiffness of the component is more important than its tensile strength, such as internal combustion engine cylinder blocks, pump housings, valve bodies, electrical boxes, counter weights and decorative castings. Grey cast iron’s high thermal conductivity and specific head capacity are often exploited to make cast iron cookware and disc brake rotors.

A typical chemical composition to obtain a graphitic microstructure is 2.5 to 4.0% carbon and 1 to 3% silicon by weight. Graphite may occupy 6 to 10% of the volume of grey iron. Silicon is important to making grey iron as opposed to white cast iron, because silicon is a graphite stabilizing element in cast iron, which means it helps the alloy produce graphite instead of iron carbides; at 3% silicon almost no carbon is held in chemical combination with the iron.

The graphite takes on the shape of a three-dimensional flake. In two dimensions, as a polished surface will appear under a microscope, the graphite flakes appear as fine lines. The tips of the flakes act as preexisting notches; therefore, it is brittle. The presence of graphite flakes makes the Grey Iron easily machinable as they tend to crack easily across the graphite flakes. Grey iron also has very good damping capacity and hence it is mostly used as the base for machine tool mountings.

Gray Cast Iron Mechanical Properties

Item according to DIN EN 1561 Measure Unit EN-GJL-150 EN-GJL-200 EN-GJL-250 EN-GJL-300 EN-GJL-350
EN-JL 1020 EN-JL 1030 EN-JL 1040 EN-JL 1050 EN-JL 1060
Tensile Strength Rm MPA 150-250 200-300 250-350 300-400 350-450
0.1% Yield Strength Rp0,1 MPA 98-165 130-195 165-228 195-260 228-285
Elongation Strength A % 0,3 – 0,8 0,3 – 0,8 0,3 – 0,8 0,3 – 0,8 0,3 – 0,8
Compressive Strength σdB MPa 600 720 840 960 1080
0,1% Compressive Strength σd0,1 MPa 195 260 325 390 455
Flexural Strength σbB MPa 250 290 340 390 490
Schuifspanning σaB MPa 170 230 290 345 400
Shear Stress TtB MPa 170 230 290 345 400
Modules of elasticity E GPa 78 – 103 88 – 113 103 – 118 108 – 137 123 – 143
Poisson number v 0,26 0,26 0,26 0,26 0,26
Brinell hardness HB 160 – 190 180 – 220 190 – 230 200 – 240 210 – 250
Ductility σbW MPa 70 90 120 140 145
Tension and pressure change σzdW MPa 40 50 60 75 85
Breaking Strength Klc N/mm3/2 320 400 480 560 650
Density g/cm3 7,10 7,15 7,20 7,25 7,30

Sand casting uses green sand (moist sand) or dry sand to form the molding systems. The green sand casting is the oldes casting process used in history. When making the mold, the patterns made of wood or metal should be produced in order to form the hollow cavity. The molten metal then pour into the cavity to form the castings after cooling and solidification. Sand casting is less expensive than other casting processes both for mold development and unit casting part. The sand casting, always mean the green sand casting (if no special description). However, nowadays, the other casting processes are also use the sand to make the mold. They have their own names, such as shell mold casting, furan resin coated sand casting (no bake type), lost foam casting and vacuum casting.

 

Sand Casting Capabilities at RMC Foundry

Description Molding by Manual Molding by Automatic Machines
Max size of Castings 1,500 mm × 1000 mm × 500 mm 1,000 mm × 800 mm × 500 mm
Casting Weight Range 0.5 kg – 1,000 kg 0.5 kg – 500 kg
Annual Capacity 5,000 tons – 6,000 tons 8,000 tons – 10,000 tons
Casting Tolerance On Request or Standard (ISO8062-2013 or GB/T 6414-1999)
Molding Materials Green Sand, Resin Coated Sand
Casting Metal & Alloys Gray Iron, Ductile Iron, Cast Steel, Stainless Steel, Al Alloys, Brass, Bronze…etc.

 The Advantages of Sand Casting:

  • ✔ Lower Cost due to its cheap and recyclable mold materials and simple production equipment.
  • ✔ Wide range of unit weight from 0.10 kg to 500 kgs or even bigger.
  • ✔ Various Structure from simple type to complex type.
  • ✔ Suitable for production requirements of various quantity.

 

Tolerance That Sand Castings Achieve:
The casting tolerances are divided into Dimensional Casting Tolerances (DCT) and Geometrical Casting Tolerances (GCT). Our foundry would like to talk with you if you have special request on the required tolerances. Here in the following are the general tolerances grade we could reach by our green sand casting, shell mould casting and no-bake furan resin sand casting:

  • ✔ DCT Grade by Green Sand Casting: CTG10 ~ CTG13
  • ✔ DCT Grade by Shell Mold Casting or Furan Resin Sand Casting: CTG8 ~ CTG12
  • ✔ GCT Grade by Green Sand Casting: CTG6 ~ CTG8
  • ✔ GCT Grade by Shell Mold Casting or Furan Resin Sand Casting: CTG4 ~ CTG7

 

Metal & Alloys Grade for Sand Casting Processes

Metal & Alloys Popular Grade
Gray Cast Iron GG10~GG40; GJL-100 ~ GJL-350;
Ductile (Nodualar) Cast Iron GGG40 ~ GGG80; GJS-400-18, GJS-40-15, GJS-450-10, GJS-500-7, GJS-600-3, GJS-700-2, GJS-800-2
Austempered Ductile Iron (ADI) EN-GJS-800-8, EN-GJS-1000-5, EN-GJS-1200-2
Carbon Steel C20, C25, C30, C45
Alloy Steel 20Mn, 45Mn, ZG20Cr, 40Cr,   20Mn5, 16CrMo4, 42CrMo,
40CrV, 20CrNiMo, GCr15, 9Mn2V
Stainless Steel Ferritic Stainless Steel, Martensitic Stainless Steel, Austenitic Stainless Steel, Precipitation Hardening Stainless Steel, Duplex Stainless Steel
Aluminium Alloys ASTM A356, ASTM A413,  ASTM A360
Brass / Copper-based Alloys C21000, C23000, C27000, C34500, C37710, C86500,  C87600, C87400, C87800,  C52100, C51100
Standard: ASTM, SAE, AISI, GOST, DIN, EN, ISO, and GB

grey iron part by sand casting
grey cast iron product by sand mold casting


Product detail pictures:

Good Quality Stainless Steel Precision Casting Manufacturer -
 Grey Cast Iron Sand Casting Part – RMC Foundry detail pictures

Good Quality Stainless Steel Precision Casting Manufacturer -
 Grey Cast Iron Sand Casting Part – RMC Foundry detail pictures

Good Quality Stainless Steel Precision Casting Manufacturer -
 Grey Cast Iron Sand Casting Part – RMC Foundry detail pictures


Related Product Guide:

No matter new customer or old customer, We believe in long term and trusted relationship for Good Quality Stainless Steel Precision Casting Manufacturer - Grey Cast Iron Sand Casting Part – RMC Foundry, The product will supply to all over the world, such as: Armenia , Poland , Malta , We solution have passed through the national skilled certification and been well received in our key industry. Our specialist engineering team will often be ready to serve you for consultation and feedback. We've been able to also provide you with no cost samples to meet your needs. Best efforts are going to be produced to supply you the very best service and solutions. For anyone who is considering our business and solutions, please speak to us by sending us emails or get in touch with us right away. As a way to know our items and enterprise. lot more, you'll be able to come to our factory to find out it. We'll constantly welcome guests from around the globe to our firm. o build enterprise. elations with us. You should really feel absolutely free to make contact with us for small business and we believe we'll share the top trading practical experience with all our merchants.
  • The company account manager has a wealth of industry knowledge and experience, he could provide appropriate program according our needs and speak English fluently.
    5 Stars By Judy from Canada - 2017.11.01 17:04
    The goods we received and the sample sales staff display to us have the same quality, it is really a creditable manufacturer.
    5 Stars By Gary from United States - 2018.07.26 16:51