About Iron Casting

Iron Casting such as Ductile Iron Casting,Grey Iron Casting usually refers to grey cast iron, but identifies a large group of ferrous alloys, which solidify with a eutectic. The color of a fractured surface can be used to identify an alloy. White cast iron is named after its white surface when fractured due to its carbide impurities which allow cracks to pass straight through. Grey cast iron is named after its grey fractured surface, which occurs because the graphitic flakes deflect a passing crack and initiate countless new cracks as the material breaks.

Iron (Fe) accounts for more than 95 %wt of the alloy material, while the main alloying elements are carbon (C) and silicon (Si). The amount of carbon in cast irons is 2.1-4 %wt. Cast irons contain appreciable amounts of silicon, normally 1-3 %wt, and consequently these alloys should be considered ternary Fe-C-Si alloys. Despite this, the principles of cast iron solidification are understood from the binary iron-carbon phase diagram, where the eutectic point lies at 1154 ¡ãC and 4.3 wt% carbon. Since cast iron has nearly this composition, its melting temperature of 1150 to 1200 ¡ãC is about 300 ¡ãC lower than the melting point of pure iron.

Cast iron such as Ductile Iron Casting,Grey Iron Casting tends to be brittle, except for malleable cast irons. With its low melting point, good fluidity, castability, excellent machinability and wear resistance, cast irons have become an engineering material with a wide range of applications, including pipes, machine and car parts.

From:http://www.wb-web.com.cn/Industrial-news/About_Iron_Casting.htm

what is Investment Casting

Investment casting is also known as the lost wax process. Investment casting process is one of the oldest manufacturing processes.



Benefits of Investment casting:



1.Intricate shapes can be made with high accuracy.



2. metals that are hard to machine or fabricate are good candidates for this process. 3. It can be used to make parts that cannot be produced by normal manufacturing techniques, such as turbine blades that have complex shapes, or airplane parts that have to withstand high temperatures.



The types of materials that can be cast are Aluminum alloys, Bronzes, tool steels, stainless steels, Stellite, Hastelloys, and precious metals. Parts made with investment castings often do not require any further machining, because of the close tolerances that can be achieved.

Investment casting, often called lost wax casting, is regarded as a precision casting process to fabricate near-net-shaped metal parts from almost any alloy. Although its history lies to a great extent in the production of art, the most common use of investment casting in more recent history has been the production of components requiring complex, often thin-wall castings. While a complete description of the process is beyond the scope of the discussion here, the sequential steps of the investment casting process will be briefly described, with emphasis on casting from rapid prototyping patterns.

The investment casting process begins with fabrication of a sacrificial pattern with the same basic geometrical shape as the finished cast part (Fig. 10.1a). Patterns are normally made of investment casting wax that is injected into a metal wax injection die. Fabricating the injection die often costs tens of thousands of dollars and can require several months of lead time. Once a wax pattern is produced, it is assembled with other wax components to form a metal delivery system (Fig. 10.1b), called the gate and runner system. The entire wax assembly is then dipped in a ceramic slurry, covered with a sand stucco (Fig. 10.1c), and allowed to dry. The dipping and stuccoing process is repeated until a shell of ~6-8 mm (1/4-3/8 in) is applied.

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Steel Casting

Ningbo Ruyi Foundry Co.,Ltd. is your reliable source for Ductile iron casting, Grey iron casting at the process of Resin Chemically Bonded Sand Cast, Resin Shell Cast, and Green Sand Cast .
At the meantime ,Located in the industrial zone ,Ningbo Ruyi Foundry with the help of different foundies and machining factory at the base of diversified casting process and capacity is engaged to supply more state-of-the-art articles .

Green Sand Casting

Character: Sand-mold casting is adaptable to a very wide range of alloys, shapes, sizes, and production quantities. Hollow shapes can be produced in these castings through the use of cores. Sand-mold green sand casting is by far the most common casting process used in industry;

Option for Green Sand Casting
green sand molds are composed of a particulate or granular material, typically sand, which is held together with a binder such as a mixture of clay and water. These molds may be manufactured rapidly for simple molds in an automated mold making plant.

Green sand molding is currently the most widely used of all sand casting methods, Green sand refers to the fact that water is added to activate the clay binder.

china Grey Iron Casting

Grey cast iron also known as flake graphite cast iron, is a type of casting iron in which most of the carbon is present as flake graphite .The propertises of grey cast iron depends on the distribution, sizs and amount of graphite flakes, and the matrix structure. These factorys are in turn, influenced mainly by the manufacturing conditions, chemical composition, solidification time and rate of cooling in he mould. Grey cast iron exhibit low to moderate strength, low modulus of elasticity, low notch sensitiviy, high thermal conductivity, moderate resistance of thermal stock , and outstanding castability.

EQUIVALENT STANDARDS TECHNICAL SPECIFICATIONS

DIN EN 1561

Germany

France

England

Netherlands

Sweden

USA

Hardness

Tensile Strength

Proof Stress

Elongation

Machinability

Microst-ructure

1:100

1:500

DIN 1691

NF

BS

NEN

MNC

ASTM A48

HB 30

Rm N/mm?/font>

Rp0,1 N/mm?/font>

A %

EN-GJL-150

GG-15

Ft 15 D

Grade 150

GG 15

01 15-00

20 B / 25 B

150/190

150-250

98-165

0,8-0,3

very good

Perlit, groblamellar

EN-GJL-200

GG-20

Ft 20 d

Grade 180 / Grade 220

GG 20

01 20-00

25 B / 30 B

170/210

200-300

130-195

0,8-0,3

very good

Perlit, roughlamellar

EN-GJL-250

GG-25

Ft 25 D

Grade 220 / Grade 260

GG 25

01 25-00

35 B / 40 B

180/230

250-350

165-228

0,8-0,3

very good

Perlit, finelamellar

if you want to know more about china Grey Iron Casting,pls visitor:iron casting

ruyi Stainless Steel Casting

Stainless steel castings are usually classified as either corrosion-resistant castings or heat-resistant. The usual distinction between heat-resistant and corrosion-resistant cast steels is based on carbon content.

Construction Parts	Flange Parts	Food Manufacturing Parts

Product Name:	Stainless Steel Casting
Material:
No	ASTM	GB
1	CA---15(410)	ZG1Cr13
2	CA---40(420)	ZG2Cr13
3	----	ZGCr28
4	CF---3(304L)	ZG00Cr18Ni10
5	CF---8(304)	ZG0Cr18Ni9
6	CF---20(303)	ZG1Cr8Ni9
7	CF---8C(347)	ZG0Cr18Ni9Ti
8	CF---3M(316L)	------
9	CA---8M(316)	ZG0Cr18Ni12Mo2Ti
10	----	ZG1Cr18Ni12MoTi
11	CH---10(309S)	ZG0Cr25Ni12
12	CH---20(309)	ZG1Cr25Ni12
13	CK-20(310)	ZG1Cr25Ni20

Casting Tolerance & Linear Tolerance
Dimensions(mm)	Normal(mm)	Premium(mm)
3----10	0.36	0.26
11-----25	0.42	0.30
26-----63	0.50	0.36
64-----100	0.56	0.40
101-----160	0.62	0.44
161------250	0.70	0.50
251-----400	0.78	0.56

China Iron Casting

In March of year 2004, Ningbo Ruyi Casting Co., Ltd. took the ownership of Fenghua Xinxin Casting Co., Ltd. and moved the whole metal melting and pouring production line to the production site of Ruyi forming an updated foundry with excellent technique and integral team.

Technique and capacity:

Ningbo Ruyi Foundry Co., Ltd. is your reliable source for Ductile iron casting, Grey iron casting .The molding process covers Resin Chemically Bonded Sand Cast, Resin Shell Cast, and Green Sand Cast.?We can also offer the advantage brought by our strategic long-term partner with diversified technique( Investment casting for steel, ,carbon steel,stainless steel, pressure die casting and gravity casting for aluminum, alloy, aluminum & zinc , as well as precision machining with general machine tool and CNC machines) so as to make customization easy to carry out . Our integral service concept brought us high praise from our customers from all over the world. Most of our products are exported to Canada, USA, and Europe Spain , Italy, Switzerland, Sweden, and so on etc. and win good reputation among our customers .

Based on the land of size 6000 square meters, the foundry's monthly iron casting output capacity is up to 350 tons, and 80% of the produced castings are sold to overseas markets.Iron Casting,Ductile Iron Casting,Grey Iron Casting,Steel Casting,Stainless Steel Casting,Carbon Steel Casting,Alloy Steel Casting,Aluminum Casting,Aluminum Pressure Die Casting,Aluminum Gravity Die Casting,Aluminum Sand Casting,Sand Casting,Green Sand Casting,Resin Sand Casting,Mold Shell Casting,Investment Casting,Die Casting,Pattern Service,CNC Machining,Machinery Parts,Auto Accessories,Valve Parts,Electric Power Transmission,Marine Parts,Railway Parts,Electric Motor Parts,Gear Cases,Chair Parts,Air Compressor Parts,Sewing Machine Parts,Construction Parts,Machine Tools Parts,Electric motor body & accessories,Manhole cover parts,Mining accessories,cylinder head & body,Counterweight items,Rotor housing,Flange, Tappet parts,Gear Cases & accessories,Sewing machine parts & accessories,Machine tools industries,Radiator parts,cylinder head & body,Counterweight items,Ductile Iron Casting,Grey Iron Casting

Business scope covers:

Machinery Parts ，Automotive accessory，Valve Parts, Electric power transmission，Marine Parts ，Railway parts，Electric motor body & accessories，Gear Cases & accessories，Chair Parts，Air compressor Parts & accessories，Manhole cover parts ，Flange, Tappet parts ，Sewing machine parts & accessories，Construction Parts & accessories，Mining accessories，Gardening Parts & Accessories，Machine tools industries,Radiator parts ,cylinder head & body ,Counterweight items,Rotor housing.

Certificate and Customization:

The foundry conforms to international standards and offers material analysis, heat treatment, non-destructive testing, proof and precision machining. With great efforts and carrying out our policy continuously which is to produce castings to meet your individual requirements, as well as monitoring each stage of production to guarantee high quality, we finally got certified by ISO9001:2000.

The foundry is located in the seaport city of Ningbo, China, it has convenient inland transportation and there are many sea-freight carriers towards different countries in the daily base. We cordially welcome customers from both domestic and overseas! Web Link Directory

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