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High Quality Steel Investment Casting - Stainless Steel Exhaust Manifold by Investment Casting and Machining – RMC Foundry

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High Quality Steel Investment Casting - Stainless Steel Exhaust Manifold by Investment Casting and Machining – RMC Foundry Detail:

China OEM custom stainless steel casting exhaust manifold for automobile.

Stainless steel is the abbreviation of stainless and acid-resistant steel. It is called stainless steel that is resistant to weak corrosive media such as air, steam, and water. Corrosion steel is called acid-resistant steel.

Due to the difference in chemical composition between the ordinary stainless steel and acid-resistant steel, their corrosion resistance is different. Ordinary stainless steel is generally not resistant to chemical media corrosion, while acid-resistant steel is generally non-corrosive. The term “stainless steel” not only refers to a single type of stainless steel, but also refers to more than one hundred industrial stainless steels. Each stainless steel developed has good performance in its specific application field.

Stainless steel is often divided into martensitic stainless steel, ferritic stainless steel, austenitic stainless steel, austenitic-ferritic (duplex) stainless steel and precipitation hardening stainless steel according to the state of microstructure. In addition, according to the chemical compositions, it can be divided into chromium stainless steel, chromium nickel stainless steel and chromium manganese nitrogen stainless steel, etc.

In casting production, most of the stainless steel castings are completed by investment casting. The surface of stainless steel castings produced by investment casting is smoother and the dimensional accuracy is easier to control. Of course, the cost of investment casting stainless steel parts is relatively high compared to other processes and materials.

Investment casting, also called precision casting or lost wax casting, is widely used as it offers asymmetrical casting with very fine details to be manufactured relatively inexpensively. The process involves producing a metal casting using a refractory mould made from a wax replica pattern. The steps involved in the process or the lost wax casting are:
• Create a wax pattern or replica
• Sprue the wax pattern
• Invest the wax pattern
• Eliminate the wax pattern by burning it (inside the furnace or in hot water) to create a mould.
• Force molten metal pour into the mould
• Cooling and Solidification
• Remove sprue from the castings
• Finish and polish the finished investment castings

 

Equivalent Grade of Stainless Steel
GROUPS AISI W-stoff DIN BS SS U.N.E. / I.H.A. UNI
Martensitic and Ferritic Stainless Steel 420 C 1,4034 X43Cr16
440 B/1 1,4112 X90 Cr Mo V18
- 1.2083 X42 Cr 13 - 2314 F.5263 -
403 1.4000 X6Cr13 403 S 17 2301 F.3110 X6Cr13
(410S) 1.4001 X7 Cr 14 (403 S17) 2301 F.3110 X6Cr13
405 1.4002 X6 CrAl 13 405 S 17 - F.3111 X6 CrAl 13
416 1.4005 X12 CrS 13 416 S 21 2380 F.3411 X12CrS13
410 1.4006 X 10 Cr 13 410 S21 2302 F.3401 X12Cr13
430 1.4016 X6 Cr 17 430 S 17 2320 F.3113 X8Cr17
420 1.4021 X20 Cr 13 420 S 37 2303 F.3402 X20Cr13
420F 1.4028 X30 Cr 13 420 S 45 (2304) F.3403 X30Cr13
(420) 1.4031 X39Cr13 420 S 45 (2304) F.3404 -
431 1.4057 X20 CrNi 17 2 431 S 29 2321 F.3427 X16CrNi16
430F 1.4104 X12 CrMoS 17 - 2383 F.3117 X10CrS17
434 1.4113 X6 CrMo 17 434 S 17 2325 - X8CrMo17
430Ti 1.4510 X6 CrTi 17 - - - X6CrTi17
409 1.4512 X5 CrTi 12 409 S 17 - - X6CrTi12
Austenitic Stainless Steel 304 1.4301 X5 CrNi 18 9 304 S 15 2332 F.3551 X5CrNi18 10
305 1.4303 X5 CrNi 18 12 305 S 19 - - X8CrNi19 10
303 1.4305 X12 CrNiS 18 8 303 S 21 2346 F.3508 X10CrNiS 18 09
304L 1.4306 X2 CrNiS 18 9 304 S 12 2352 F.3503 X2CrNi18 11
301 1.4310 X12 CrNi 17 7 - 2331 F.3517 X12CrNi17 07
304 1.4350 X5 CrNi 18 9 304 S 31 2332 F.3551 X5CrNi18 10
304 1.4350 X5 CrNi 18 9 304 S 31 2333 F.3551 X5CrNi18 10
304LN 1.4311 X2 CrNiN 18 10 304 S 62 2371 - -
316 1.4401 X5 CrNiMo 18 10 316 S 16 2347 F.3543 X5CrNiMo17 12
316L 1.4404 - 316 S 12/13/14/22/24 2348 X2CrNiMo17 12
316LN 1.4429 X2 CrNiMoN 18 13 - 2375 - -
316L 1.4435 X2 CrNiMo 18 12 316 S 12/13/14/22/24 2353 - X2CrNiMo17 12
316 1.4436 - 316 S 33 2343 - X8CrNiMo 17 13
317L 1.4438 X2 CrNiMo 18 16 317 S 12 2367 - X2CrNiMo18 16
329 1.4460 X3 CrNiMoN 27 5 2 - 2324 F.3309 -
321 1.4541 X10 CrNiTi 18 9 321 S 12 2337 F.3553 X6CrNiTi18 11
347 1.4550 X10 CrNiNb 18 9 347 S 17 2338 F.3552 X6CrNiNb18 11
316Ti 1.4571 X10 CrNiMoTi 18 10 320 S 17 2350 F.3535 X6CrNiMoTi 17 12
309 1.4828 X15 CrNiSi 20 12 309 S 24 - - X16 CrNi 24 14
330 1.4864 X12 NiCrSi 36 16 - - - -
Duplex Stainless Steel S32750 1.4410 X 2 CrNiMoN 25 7 4 - 2328 - -
S31500 1.4417 X 2 CrNiMoSi 19 5 - 2376 - -
S31803 1.4462 X 2 CrNiMoN 22 5 3 - 2377 - -
S32760 1.4501 X 3 CrNiMoN 25 7 - - - -
630 1.4542 X5CrNiCNb16-4 - - - -
A564/630 - - - - - -


Capabilities of Investment Casting Foundry:

• Max Size: 1,000 mm × 800 mm × 500 mm
• Weight Range: 0.5 kg – 100 kg
• Annual Capacity: 2,000 tons
• Bond Materials for Shell Building: Silica Sol, Water Glass and their mixtures.
• Tolerances: On Request.

Advantages of Investment Casting Components:
- Excellent and smooth surface finish
- Tight dimensional tolerances.
- Complex and intricate shapes with design flexibility
- Capability to cast thin walls therefore a lighter casting component
- Wide selection of cast metals and alloys (ferrous and non-ferrous)
- Draft is not required in the molds design.
- Reduce the need for secondary machining.
- Low material waste.

 

Materials for Investment Casting Process at RMC Foundry
Category China Grade US Grade Germany Grade
Ferritic Stainless Steel 1Cr17, 022Cr12, 10Cr17, 430, 431, 446, CA-15, CA6N, CA6NM 1.4000, 1.4005, 1.4008, 1.4016, GX22CrNi17, GX4CrNi13-4
Martensitic Stainless Steel 1Cr13, 2Cr13, 3Cr13, 4Cr13, 410, 420, 430, 440B, 440C 1.4021, 1.4027, 1.4028, 1.4057, 1.4059, 1.4104, 1.4112, 1.4116, 1.4120, 1.4122, 1.4125
Austenitic stainless steel 06Cr19Ni10, 022Cr19Ni10,
06Cr25Ni20, 022Cr17Ni12Mo2, 03Cr18Ni16Mo5
302, 303, 304, 304L, 316, 316L,   329, CF3, CF3M, CF8, CF8M, CN7M, CN3MN 1.3960, 1.4301, 1.4305, 1.4306, 1.4308, 1.4313, 1.4321, 1.4401, 1.4403, 1.4404, 1.4405, 1.4406, 1.4408, 1.4409, 1.4435, 1.4436, 1.4539, 1.4550, 1.4552, 1.4581,
1.4582, 1.4584,
Precipitation Hardening Stainless Steel 05Cr15Ni5Cu4Nb, 05Cr17Ni4Cu4Nb 630, 634, 17-4PH, 15-5PH,  CB7Cu-1 1.4542
Duplex Stainless Steel 022Cr22Ni5Mo3N, 022Cr25Ni6Mo2N A 890 1C, A 890 1A, A 890 3A, A 890 4A, A 890 5A,
A 995 1B, A 995 4A, A 995 5A, 2205, 2507
1.4460, 1.4462, 1.4468, 1.4469, 1.4517, 1.4770
High Mn Steel ZGMn13-1, ZGMn13-3, ZGMn13-5 B2, B3, B4 1.3802, 1.3966, 1.3301, 1.3302
Tool Steel Cr12 A5, H12, S5 1.2344, 1.3343, 1.4528, GXCrMo17,   X210Cr13, GX162CrMoV12
Heat Resistant Steel 20Cr25Ni20, 16Cr23Ni13,
45Cr14Ni14W2Mo
309, 310, CK20, CH20, HK30 1.4826, 1.4828, 1.4855, 1.4865
Nickle-base Alloy HASTELLY-C, HASTELLY-X,  SUPPER22H, CW-2M, CW-6M, CW-12MW, CX-2MW, HX(66Ni-17Cr), MRE-2, NA-22H, NW-22,  M30C, M-35-1, INCOLOY600,
INCOLOY625
2.4815, 2.4879, 2.4680
Aluminum
Alloy
ZL101, ZL102, ZL104 ASTM A356, ASTM A413,  ASTM A360 G-AlSi7Mg, G-Al12
Copper Alloy H96, H85, H65, HPb63-3,
HPb59-1, QSn6.5-0.1, QSn7-0.2
C21000, C23000, C27000, C34500, C37710, C86500,  C87600, C87400, C87800,  C52100, C51100 CuZn5, CuZn15, CuZn35, CuZn36Pb3, CuZn40Pb2, CuSn10P1, CuSn5ZnPb, CuSn5Zn5Pb5
Cobalt-base Alloy UMC50, 670, Grade 31 2.4778

precision lost wax casting foundry

 

INVESTMENT CASTING TOLERANCES
Inches Millimeters
Dimension Tolerance Dimension Tolerance
Up to 0.500 ±.004″ Up to 12.0 ± 0.10mm
0.500 to 1.000” ±.006″ 12.0 to 25.0 ± 0.15mm
1.000 to 1.500” ±.008″ 25.0 to 37.0 ± 0.20mm
1.500 to 2.000” ±.010″ 37.0 to 50.0 ± 0.25mm
2.000  to 2.500” ±.012″ 50.0 to 62.0 ± 0.30mm
2.500 to 3.500” ±.014″ 62.0 to 87.0 ± 0.35mm
3.500 to 5.000” ±.017″ 87.0 to 125.0 ± 0.40mm
5.000 to 7.500” ±.020″ 125.0 to190.0 ± 0.50mm
7.500 to 10.000” ±.022″ 190.0 to 250.0 ± 0.57mm
10.000 to 12.500” ±.025″ 250.0 to 312.0 ± 0.60mm
12.500 to 15.000 ±.028″ 312.0 to 375.0 ± 0.70mm

 

Value Added Services on Engineering and Manufacturing: 

Services  Description
Surface Treatment Services Powder Coating, Anodization, Electrophotesis, Chrome Plating, Painting, Sand blasting, Nickel Plating, Zinc Plating, Blacking, Polishing, Bluing, Geormet, Zintek, etc.
CNC Precision Machining Services Lathing, Milling, Turning, Honing, Drilling, Boring, Tapping, Wire Electrode Cutting, Grinding…etc.
Inspection and Quality Control Spectrum Analyzer, CMM, Hardness Tester, Tensile Strength Tester, Yild Strentgh Testor, Sealing Pressure Tester, Carbon Sulfur Analyzer, Metallurgical Microscopy, Press Force Tester…etc.

Precision Investment Casting Products

OEM Custom Investment Casting Products


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High Quality Steel Investment Casting -
 Stainless Steel Exhaust Manifold by Investment Casting and Machining – RMC Foundry detail pictures


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We'll make every effort and hard work being outstanding and excellent, and speed up our techniques for standing during the rank of global top-grade and high-tech enterprises for High Quality Steel Investment Casting - Stainless Steel Exhaust Manifold by Investment Casting and Machining – RMC Foundry, The product will supply to all over the world, such as: Leicester , Anguilla , Guinea , All our staffs believe that: Quality builds today and service creates future. We know that good quality and the best service are the only way for us to achieve our customers and to achieve ourselves too. We welcome customers all over the word to contact us for future business relationships. Our products are the best. Once Selected, Perfect Forever!
  • We have been cooperated with this company for many years, the company always ensure timely delivery ,good quality and correct number, we are good partners.
    5 Stars By Maria from Hanover - 2017.08.16 13:39
    The after-sale warranty service is timely and thoughtful, encounter problems can be resolved very quickly, we feel reliable and secure.
    5 Stars By Madge from Swedish - 2017.06.16 18:23