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2019-08-13
Centrifugal casting - We produce centrifugal casting products based on individual demands
What is centrifugal casting?
“ Centrifugal casting is one of the casting methods. But, it is not the stereotype of casting.”
Casting has a long history. The typical impression regarding casting is ” the surface of the product might show porosity” and “ the casting might contains inclusions. ”
However, using centrifugal casting technique to manufacture the products, there will be without porosity and impurities of the castings.
How does centrifugal casting make the casting so pure?
It is because of centrifugal force and directional solidification.
Casters will pour the molten metal into the spinning mold that has been applied the coatings and heated to the suitable temperature. Through the mold rotates in the high speed, the centrifugal force would spread the molten metal evenly. The impurities and gases that have lower densities than metal would move to the bore. Caster is able to machine these non-metallic impurities simply then.
Also, the solidification will start from outside to inside diameter. Because of the directional solidification, the grain structure of centrifugal casting is quite fine.
The comparison among centrifugal casting, forging and sand casting
Forging is the metal forming process. However, casting is the solidification process.
Centrifugal casting v.s. sand casting
We have talked about the manufacturing process of centrifugal casting in the previous paragraph, the centrifugal force and solidification way would make each centrifugal casting non-porous and clean with fine grain structure.
But, sand casting is the molten metal is poured into the cavity and the metal solidifies. This solidification starts form mold top and bottom. It would lead to centerline shrinkage. The grain structure is much coarser than centrifugal casting.
*Advantages of centrifugal casting compared to sand casting
1. Mechanical properties -> Centrifugal casting is much better than sand casting
2. Production of small order quantity-> Centrifugal casting is able to make it
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Centrifugal casting |
Sand casting |
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1. Strength of mechanical properties? |
√ Much higher. Centrifugal force and directional solidification make the clean piece. |
Low. Pores and voids could result in corrosion and cracks that would affect the mechanical properties. |
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2. Possible for small order quantity production? |
√ Yes. Exact liquid metal is poured into the mold. It would not waste the amount of metal. |
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Centrifugal casting v.s. forging
Metal is shaped by plastic deformation under high pressure into high strength component is called forging or cold forming. This process is without metal pouring and consequent solidification; it is related to high pressure only. This manufacturing process could avoid porosity and voids.
When considering cost, forging is comparatively not better than centrifugal casting. Sometimes we would need to sacrifice much metal to get the shape by forging. However, the requirement of metal amount by centrifugal casting would be less.
*Advantages of centrifugal casting compared to forging
1. Mechanical properties -> Centrifugal casting is almost equal to forging
2. Cost-> If you need cylindrical components, centrifugal casting is more cost-effective than forging
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Centrifugal casting |
Forging |
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1. Strength of mechanical properties? |
√ High. Almost equal to forging. When changing the parameters, it is possible to make the strength higher than forging |
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2. Cost |
√ Lower. It is cost-effective to produce the cylindrical components |
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Centrifugal casting products
When it comes to cylindrical parts, centrifugal casting is an ideal technique to produce that. The main centrifugal casting products we manufacture are as follow.
Tubes/ Pipes
Tubes or pipes manufactured by centrifugal casting is the most common material we produce. Common stainless steel (300 series), higher grade stainless steel (17-4PH, duplex), Ni-resist and Nickel-based alloys are the alloys we have.
Customers are able to provide the information about their working environment or the application for us, we would give the best suggestion for alloy selection.
You are able to browse our pages of Tubes/ Pipes directly.
The link is below:
www.lawai-alloytube.com/products_list.asp
Radiant tubes
Straight, U type and W type radiant tubes are the most common heat-resistant components manufactured by centrifugal casting.
The thinner thickness may lead to higher heat conduction. The thickness of 4.5 mm of radiant tubes are able to make by us.
The pages of radiant tubes are able to be browsed by the link below:
www.lawai-alloytube.com/products_list.asp
Rings
Rings manufactured by centrifugal casting are done by the cutting process from each tube. The max. diameter is around 600 mm by our current capacity.
No matter you need rough machined or finish machined rings, we will be able to do that for you based on your mechanical drawings.
The link is below:
www.lawai-alloytube.com/products_list.asp
Bushings
Our bushings produced by centrifugal casting are supplied to bearing manufacturers largely. The typical bushings could be with flange or without flange.
17-4PH bushing is one of the bushing projects. If you are interested, you can browse the link below.
www.lawai-alloytube.com/faq_show.asp
Rollers
Welding construction is an important part for rollers. To connect shaft with body is challenging especially for special alloy. Choosing the right welding material would enhance the lifetime of the rollers.
Our article of heat-resistant rollers manufactured by centrifugal casting is below.
The world of centrifugal casting is bigger than what you imagine
Making a good piece by centrifugal casting is always challenging. Each alloy has its special characteristics. Some alloys show high corrosion resistance and others might perform high wear or heat resistance. Adding extra alloying element also would improve much on mechanical properties. The complexity and depth of centrifugal casting are attracting.
The academic research is able to provide us the guide when we manufacture centrifugal casting. However, the deepest knowledge is always from our daily casting life. Sometimes the most difficult part is consequent processes including heat-treatment, machining and welding construction.
The world of centrifugal casting is so broad. There is no end to stop discovering!
If you have the demands of our centrifugal castings, please contact us. Thank you.
+886-3-6581116
LAWAI INDUSTRIAL CORPORATION
The grades of centrifugal casting we manufacture are as follows.
Stainless Steel-300 Series (Centrifugal Casting)
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Wrought Grade |
ACl /CAST |
CAST EN/DIN |
CAST UNS |
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AISI 304 centrifugal casting |
CF8 centrifugal casting |
1.4308 GX6CrNi189 centrifugal casting |
J92600 centrifugal casting |
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AISI 304L centrifugal casting |
CF3 centrifugal casting |
1.4306 X2CrNi19-11 centrifugal casting |
J92500 centrifugal casting |
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AISI 316 centrifugal casting |
CF8M centrifugal casting |
1.4408 GX6CrNiMo18-10 centrifugal casting |
J92900 centrifugal casting |
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AISI 316L centrifugal casting |
CF3M centrifugal casting |
1.4404/1.4409 X2CrNiMo17-12-2 centrifugal casting |
J92800 centrifugal casting |
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AISI 310S centrifugal casting |
CK20 centrifugal casting |
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J94202 centrifugal casting |
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AISI 347 centrifugal casting |
CF8C centrifugal casting |
1.4552, GX5CrNiNb18-9 centrifugal casting |
J92910 centrifugal casting |
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AISI 317 centrifugal casting |
CG8M centrifugal casting |
1.4408 GX6CrNiMo18-10 centrifugal casting |
J93000 centrifugal casting |
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AISI 317L centrifugal casting |
CG3M centrifugal casting |
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J92999 centrifugal casting |
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Nitronic 60 centrifugal casting |
CF10SMNN centrifugal casting |
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Nitronic 50 centrifugal casting |
CG6MMN centrifugal casting |
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J93790 centrifugal casting |
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20Cb3 centrifugal casting |
CN7M centrifugal casting |
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N08007 centrifugal casting |
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AISI 309 centrifugal casting |
CH20 centrifugal casting |
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J93400 centrifugal casting |
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CE20N centrifugal casting |
CD20N centrifugal casting |
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N08007 centrifugal casting |
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Nitronic33 centrifugal casting |
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Nitronic40 centrifugal casting |
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CN7MS centrifugal casting |
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J94650 centrifugal casting |
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AL6XN centrifugal casting |
CN3MN centrifugal casting |
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J94651 centrifugal casting |
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254SMO, F44 centrifugal casting |
CK3MCuN centrifugal casting |
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J93254 centrifugal casting |
Stainless Steels-400 Series
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Wrought Grade |
ACl /CAST |
CAST EN/DIN |
CAST UNS |
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AISI 410 centrifugal casting |
CA15 centrifugal casting |
1.4008 GX8CrNo13 |
J91150 centrifugal casting |
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AISI 416 centrifugal casting |
416 centrifugal casting |
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S41600 centrifugal casting |
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AISI 420 centrifugal casting |
CA40 centrifugal casting |
1.4027 GX20Cr14 centrifugal casting |
J91153 centrifugal casting |
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AISI 420F centrifugal casting |
CA40F centrifugal casting |
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J91154 centrifugal casting |
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AISI 431 centrifugal casting |
431 centrifugal casting |
1.4059 GX22CrNi17 centrifugal casting |
J91651 centrifugal casting |
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13-4, F6NM centrifugal casting |
CA6NM centrifugal casting |
1.4313 GX5CrNi134c entrifugal casting |
J91540 centrifugal casting |
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440A centrifugal casting |
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440B centrifugal casting |
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4 |
440C centrifugal casting |
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Stainless Steel – Precipitation Hardening
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Wrought Grade |
ACl /CAST |
CAST EN/DIN |
CAST UNS |
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17-4PH centrifugal casting |
CB7Cu-1 centrifugal casting |
1.4540 GX4CrNiCuNb16-4 centrifugal casting |
J92180 centrifugal casting |
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15-5PH centrifugal casting |
CB7Cu-2 centrifugal casting |
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J92110 centrifugal casting |
Stainless Steel – Duplex (Centrifugal Casting
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Wrought Grade |
ACl /CAST |
CAST EN/DIN |
CAST UNS |
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CD4MCu centrifugal casting |
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J93372 centrifugal casting |
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SAF 2205,F51 centrifugal casting |
CD3MN centrifugal casting |
1.4470 GX2CrNiMoN22-5 centrifugal casting |
J92205 centrifugal casting |
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Ferralium255 centrifugal casting |
CD7MCuN centrifugal casting |
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S32550 centrifugal casting |
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CD4MCuN centrifugal casting |
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J93372 centrifugal casting |
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DPX-1B MOD centrifugal casting |
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SAF 2507, F53 centrifugal casting |
CE3MN centrifugal casting |
1.4469 GX2CrNiMoN26-7 centrifugal casting |
J93404 centrifugal casting |
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CE8MN centrifugal casting |
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J93345 centrifugal casting |
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CD3MWCuN centrifugal casting |
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J93380 centrifugal casting |
Nickel Based Alloys, Super Alloys (Centrifugal Casting)
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Wrought Grade |
ACl /CAST |
CAST EN/DIN |
CAST UNS |
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50Cr-50Ni+Cb centrifugal casting |
50Cr-50Ni+Cb centrifugal casting |
2.4678, 2.4680, 2.4813 centrifugal casting |
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INCONEL 625 centrifugal casting |
CW6MC centrifugal casting |
2.4856 NiCr22Mo9Nb centrifugal casting |
N26625 centrifugal casting |
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INCONEL 600 centrifugal casting |
CY40 centrifugal casting |
2.4816 NiCr15Fe centrifugal casting |
N06040 centrifugal casting |
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Hastelloy B2 centrifugal casting |
N12MV centrifugal casting |
2.4882 centrifugal casting |
N30012 centrifugal casting |
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Hastelloy C276 centrifugal casting |
CW-12MW centrifugal casting |
2.4886 SGNiMo16Cr16W centrifugal casting |
N30002 centrifugal casting |
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Hastelloy B2 centrifugal casting |
N7M centrifugal casting |
2.4617 NiMo28 centrifugal casting |
N30007 centrifugal casting |
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Hastelloy C4 centrifugal casting |
CW2M centrifugal casting |
2.4610 NiMo16Cr16Ti centrifugal casting |
N26455 centrifugal casting |
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Hastelloy C22 centrifugal casting |
CX2MW centrifugal casting |
9.4602 centrifugal casting |
N26022 centrifugal casting |
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Hastelloy X centrifugal casting |
Ni-X centrifugal casting |
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N06002 centrifugal casting |
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Nickel 200 centrifugal casting |
CZ100 centrifugal casting |
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N02100 centrifugal casting |
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Wrought Grade |
ACl /CAST |
JIS |
CAST EN/DIN |
CAST UNS |
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AISI 327 centrifugal casting |
HD centrifugal casting |
SCH11 centrifugal casting |
1.4823 GX40CrNiSi27-4 centrifugal casting |
J93005 centrifugal casting |
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AISI 312 centrifugal casting |
HE centrifugal casting |
SCH17 centrifugal casting |
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J93403 centrifugal casting |
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AISI 302 centrifugal casting AISI 302B centrifugal casting |
HF centrifugal casting |
SCH12 centrifugal casting |
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J92603 centrifugal casting J92803 centrifugal casting |
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AISI 309 centrifugal casting |
HH 2 centrifugal casting |
SCH13A centrifugal casting |
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J93503 centrifugal casting |
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HI centrifugal casting |
SCH18 centrifugal casting |
1.4846 X40CrNi centrifugal casting |
J94003 centrifugal casting |
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AISI 310 centrifugal casting |
HK centrifugal casting |
SCH21 centrifugal casting |
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J94224 centrifugal casting |
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AISI 310 centrifugal casting |
HK-40 centrifugal casting |
SCH22 centrifugal casting |
1.4848 G-X40CrNiSi2520 centrifugal casting |
J94204 centrifugal casting |
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HL centrifugal casting |
SCH23 centrifugal casting |
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N08604 centrifugal casting |
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HN centrifugal casting |
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J94213 centrifugal casting |
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HP centrifugal casting |
SCH24 centrifugal casting |
1.4857 GX40NiCrSi35-25 centrifugal casting |
N08705 centrifugal casting |
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AISI 330 centrifugal casting |
HT centrifugal casting |
SCH15 centrifugal casting |
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N08605 centrifugal casting |
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HU centrifugal casting |
SCH20 centrifugal casting |
1.4865 GX40NiCrSi38-18 centrifugal casting |
N08004 centrifugal casting |
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HW centrifugal casting |
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N08001 centrifugal casting |
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HX centrifugal casting |
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N06006 centrifugal casting |
Other Alloys, Special Irons
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LAWAI ALLOY |
ACl /CAST |
CAST EN/DIN |
CAST UNS |
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D-2 Tool Steel centrifugal casting |
CD-2 centrifugal casting |
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T30402 centrifugal casting |
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D-5 Tool Steel centrifugal casting |
CD-5 centrifugal casting |
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T30405 centrifugal casting |
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Ni-resist 1 centrifugal casting |
Type 1 centrifugal casting |
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F41000 centrifugal casting |
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Ni-resist 2 centrifugal casting |
Type 2 centrifugal casting |
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F41002 centrifugal casting |
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Ni-resist 3 centrifugal casting |
Type 3 centrifugal casting |
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F41004 centrifugal casting |
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Ni-resist 4 centrifugal casting |
Type 4 centrifugal casting |
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F41005 centrifugal casting |
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Ductile Ni-resist centrifugal casting |
Type D-2 centrifugal casting |
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F43000 centrifugal casting |
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Ductile Ni-resist centrifugal casting |
Type D-2B centrifugal casting |
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F43001 centrifugal casting |
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15-3CrMo White Iron centrifugal casting |
Type IIB centrifugal casting |
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F45005 centrifugal casting |
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HC-250 centrifugal casting |
Type IIIA centrifugal casting |
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F45009 centrifugal casting |