Precision Investment Casting

Precision Investment Casting

Precision Investment Castings High Quality Castings Manufacturer Product Description and Process Precision Investment Castings High Quality Castings Manufacturer Production process: lost wax casting process Weight range: from 0.01 kilograms to 50 kilograms Heat Treatment Process: normalizing,...

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Precision Investment Castings High Quality Castings Manufacturer

Product Description and Process

Precision Investment Castings High Quality Castings Manufacturer

Production process: lost wax casting process

Weight range: from 0.01 kilograms to 50 kilograms

Heat Treatment Process: normalizing, annealing, tempering etc.

Machining process: CNC machine, machining center, lathe, mill machine, drill machine, etc.

Surface treatment process: Paint coating, electrophoretic paint coating, electrogalvanizing coating, black oxide coating, phosphate treatment, powder coating, etc.


Product Material and Uses

Normally produce with ASTM A27/A27M Grade U-60-30, Grade 60-30, Grade 65-35, Grade 70-36, Grade 70-40, ZG200-400, ZG230-450, ZG270-500, ZG310-570, ZG340-640, etc.

The carbon steel casting products are widely used for Auto-cars, trains, trucks, vehicle components, and mining machinery components, agricultural machinery parts, textile machinery parts, construction machinery parts, etc.


Advantages of Investment Casting

INVESTMENT CASTING VS. SAND CASTING

Sand castings are made by creating a negative in a bed of sand to create the cavity for casting. A sand shell creates a rough exterior to castings.

Typical surface finish of sand castings are 250 Ra as cast, and need extensive work afterwards to create a surface finish that is acceptable in most applications. Sand castings can also not hold as tight of tolerances as Investment Castings, and will likely need more machining than an Investment Casting.

Investment casting uses a ceramic mold that can produce a much smoother finish, typically averaging 125 Ra surface finish as cast. Investment castings also greatly reduce the amount of machining that will be required after casting by holding a .005”/inch tolerance for the majority of applications.


INVESTMENT CASTING VS. DIE CASTING

Die casting is the process in which molten metal is forced into a mold cavity. Using molten metal requires tooling that is made of hardened tool steel, which causes start-up costs to new programs to be extremely expensive. Tools also wear quickly, requiring expensive refurbishments and replacements throughout the life of the tool. Ferrous metals, like carbon steel and stainless steel, cannot be cast using this method, further limiting its usefulness.

Investment casting injects wax into an aluminum cavity. Aluminum has a lower cost, is easier to cut, and less expensive to maintain. Using wax also is easier on tooling, allowing it to maintain consistent parts for many more uses. Investment casting allows for ferrous and non-ferrous metals (aluminum, brass, bronze, etc) to be cast.


INVESTMENT CASTING VS. FORGING

Forging is the process in which either hot or cold material is pressed with a massive hammer to push the material into the shape desired. This process requires extremely expensive tooling that often needs to be replaced. While the strength of a part is slightly better with forgings, the heightened level of danger inherent to forging, along with specialty equipment, drives the cost of forgings higher. Many forgings need to be heavily treated after completion for hardness, as well as to be machined due to lack of tolerance holding.

Investment casting requires less expensive equipment, and is inherently less dangerous, allowing costs to remain lower. Investment castings also can hold much tighter tolerances, reducing the amount of machining typical to forgings.


INVESTMENT CASTING VS. METAL FABRICATION

Metal fabrications are metal structures produced by cutting, bending, and welding multiple pieces of material together. The result is multiple steps in the process, and causing higher scrap. The increase in wasted materials, along with increased labor time, causes metal fabrications to be expensive and time consuming. Without careful craftsmanship, or extensive work after completion, metal fabrications can look sloppy to end users.

Investment casting can cut down labor time and offer one continuous part that has a consistent and clean look to the end user. The reduction of labor time reduces lead times and cost of castable applications. The consistency in castings can also lead to lower scrap, lowering final costs even further.


Cast Steel Grade Standard

China
GB

Germany

France
NF

ISO Standard

Japan
JIS

Sweden
SS

Britain
BS

America

DIN

W-Nr.

ASTM

UNS

ZG200-400
(ZG15)

GS-38

1.0416

-

200-400

SC410
(SC42)

1306

-

415-205
(60-30)

J03000

ZG230-450
(ZG25)

GS-45

1.0446

GE230

230-450

SC450
(SC46)

1305

A1

450-240
(65-35)

J03101

ZG270-550
(ZG35)

GS-52

1.0552

GE280

270-480

SC480
(SC49)

1505

A2

485-275
(70-40)

J02501

ZG310-570
(ZG45)

GS-60

1.0558

GE320

-

SCC5

1606

-

(80-40)

J05002

ZG340-640
(ZG55)

-

-

GE370

340-550

-

-

A5

-

J05000

Note: in the bracket is the old Grade


Structural Carbon Steel Grade Standard

China
  GB

Germany

France
NF

ISO Standard

Japan
JIS

Britain
BS

America

DIN

W-Nr.

ASTM

UNS

20

C22E
Ck22

1.1151

C22E
XC18

-

S20C

C22E
070M20

1020

G10200

25

C25E
Ck25

1.1158

C25E
XC25

C25E4

S25C

C25E
070M26

1025

G10250

30

C30E
Ck30

1.1178

C30E
XC32

C30E4

S30C

C30E
080M30

1030

G10300

35

C35E
Ck35

1.1181

C35E
XC38

C35E4

S35C

C35E
080M36

1035

G10350

40

C40E
Ck40

1.1186

C40E
XC42

C40E4

S40C

C40E
080M40

1040

G10400

45

C45E
Ck45

1.1191

C45E
XC48

C45E4

S45C

C45E
080M46

1045

G10450

50

C50E
Ck53

1.1210

C50E

C50E4

S50C

C50E
080M50

1050

G10500

20Mn

21Mn4

1.0469

20M5

-

-

080A20

1022

G10220

25Mn

-

-

-

-

-

080A25

1026

G10260

30Mn

30Mn4

1.1146

32M5

-

-

080A30

1033

G10330

35Mn

36Mn4

1.0561

35M5

-

-

080A35

1037

G10370

40Mn

40Mn4

1.1157

40M5

SL,SM

SWRH42B

080A40

1039

G10390

45Mn

-

-

45M5

SL,SM

SWRH47B

080A47

1046

G10460


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