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Centrifugal Pump Grays Casting Pump Body Parts Resin Sand Castings

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Centrifugal Pump Grays Casting Pump Body Parts Resin Sand Castings

China Centrifugal Pump Grays Casting Pump Body Parts Resin Sand Castings supplier
Centrifugal Pump Grays Casting Pump Body Parts Resin Sand Castings supplier Centrifugal Pump Grays Casting Pump Body Parts Resin Sand Castings supplier

Large Image :  Centrifugal Pump Grays Casting Pump Body Parts Resin Sand Castings

Product Details:

Place of Origin: China
Brand Name: non-standard
Certification: ISO9001;TS16949
Model Number: custom-built

Payment & Shipping Terms:

Minimum Order Quantity: 1 Ton
Price: quote according to different drawing technique requirements
Packaging Details: Plywood crate + VCI Anti-Rust Bag
Delivery Time: within 60 days
Payment Terms: T/T, L/C
Supply Ability: 300 Tons every month
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Detailed Product Description
Material: HT250 Process: Resin Sand Casting Process
Machining: CNC Machining Surface: Anti-Rust Oil
Used For: Pump Industry

Centrifugal Pump Grays Casting Pump Body Parts Resin Sand Castings

 

 

Product Description and Process
 
1.Centrifugal Pump Casing Pump Body Parts Gray Cast Iron Resin Sand Castings
 
2. Production process: green sand molding, pre-coated sand molding and resin sand molding which can produce iron castings from 50 gram to 2000 kilograms
 
3. Machining process: CNC machine, machining center, lathe, mill machine, drill machine, etc.
 
4. Surface treatment process: paint coating, electrophoretic coating, electrogalvanizing coating, black oxide coating, phosphate coating, powder coating, etc.
 
Product Material and Uses


1. Normally produce with gray iron HT200, HT250, Ductile Iron 65-45-12, 60-40-18, 80-55-06, 80-60-03, etc.
2. The ductile iron casting products are widely used for Auto-cars, trains, trucks, vehicle components, mining machinery components, agricultural machinery parts, textile machinery parts, construction machinery parts, valves and pump parts, etc.

 

Classifications

In the United States, the most commonly used classification for gray iron is ASTM International standard A48.

This orders gray iron into classes which corresponds with its minimum tensile strength in thousands of pounds per square inch (ksi); e.g. class 20 gray iron has a minimum tensile strength of 20,000 psi (140 MPa). Class 20 has a high carbon equivalent and a ferrite matrix. Higher strength gray irons, up to class 40, have lower carbon equivalents and a pearlite matrix. Gray iron above class 40 requires alloying to provide solid solution strengthening, and heat treating is used to modify the matrix. Class 80 is the highest class available, but it is extremely brittle.

ASTM A247 is also commonly used to describe the graphite structure. Other ASTM standards that deal with gray iron include ASTM A126, ASTM A278, and ASTM A319.

In the automotive industry, the SAE International (SAE) standard SAE J431 is used to designate grades instead of classes. These grades are a measure of the tensile strength-to-Brinell hardness ratio.

The variation of the tensile modulus of elasticity of the various grades is a reflection of the percentage of graphite in the material as such material has neither strength nor stiffness and the space occupied by graphite acts like a void, thereby creating a spongy material.

 

 


Properties of ASTM A48 Classes of gray iron
 

Class Tensile
strength (ksi)
Compressive
strength (ksi)
Tensile modulus,
E (Mpsi)
20 22 83 10
30 31 109 14
40 57 140 18
60 62.5 187.5 21

 
 
Properties of SAE J431 grades of gray iron

 

Grade Brinell hardness t/h† Description
G1800 120–187 135 Ferritic-pearlitic
G2500 170–229 135 Pearlitic-ferritic
G3000 187–241 150 Pearlitic
G3500 207–255 165 Pearlitic
G4000 217–269 175 Pearlitic
†t/h = tensile strength/hardness

 
 

 

 

 

 
Grey Iron Castings Hardness

 

Gray Iron Grade Hardness Grade

Hardness Range
HB

Metallography
HT100 H145 ≤170 Ferrite
HT150 H175 150~200 Ferrite + Pearlite
HT200 H195 170~220 Pearlite
HT250 H215 190~240 Pearlite
HT300 H235 210~260 Pearlite(Inoculated Cast Iron)
HT350 H255 230~280 Pearlite(Inoculated Cast Iron)

 
 
What is the Composition of Gray Cast Iron?
 
Just like all cast iron parts, the primary component of Grey Iron is going to be the iron (no surprise there, right?). Just like most other cast irons, it also has 2.5–4.0% carbon and 1–3% silicon. If you look at Chart 2 you will notice that the composition of the iron is very close to other common cast parts, but with a little more phosphorus.

Grey Cast Iron Property and Chemical Composition

Gray Iron Casting, no any standard mentioned the chemistry composition, so we only suggest the following chemistry based on actual production.
 

Grade

Wall Thickness
/mm

C Si Mn

P

S

HT100 3.4~3.9 2.1~2.6 0.5~0.8 0.3 0.15
HT150

<30
30~50
>50

3.3~3.5
3.2~3.5
3.2~3.5

2.0~2.4
1.9~2.3
1.8~2.2

0.5~0.8
0.5~0.8
0.6~0.9

0.2
0.2
0.2

0.12
0.12
0.12

HT200

<30
30~50
>50

3.2~3.5
3.1~3.4
3.0~3.3

1.6~2.0
1.5~1.8
1.4~1.6

1.7~0.9
0.8~1.0
0.8~1.0

0.15
0.15
0.15

0.12
0.12
0.12

HT250

<30
30~50
>50

3.0~3.3
2.9~3.2
2.8~3.1

1.4~1.7
1.3~1.6
1.2~1.5

0.8~1.0
0.9~1.1
1.0~1.2

0.15
0.15
0.15

0.12
0.12
0.12

HT300

<30
30~50
>50

2.9~3.2
2.9~3.2
2.8~3.1

1.4~1.7
1.2~1.5
1.1~1.4

0.8~1.0
0.9~1.1
1.0~1.2

0.15
0.15
0.15

0.10
0.10
0.10

 
 

Contact Details
Zhengzhou Yu-Long Machinery Equipment Co., Ltd.

Contact Person: James Wang

Tel: +8613213152686

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