CN110760747A - Nodular cast tube - Google Patents
Nodular cast tube Download PDFInfo
- Publication number
- CN110760747A CN110760747A CN201911043307.9A CN201911043307A CN110760747A CN 110760747 A CN110760747 A CN 110760747A CN 201911043307 A CN201911043307 A CN 201911043307A CN 110760747 A CN110760747 A CN 110760747A
- Authority
- CN
- China
- Prior art keywords
- parts
- nodular cast
- manganese
- phosphorus
- sulfur
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/04—Cast-iron alloys containing spheroidal graphite
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/06—Cast-iron alloys containing chromium
- C22C37/08—Cast-iron alloys containing chromium with nickel
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses a nodular cast tube which comprises the following compositions in parts by mass: 394 parts of pig iron 147-. The invention achieves the purposes of refining crystal grains and strengthening matrix by adopting multi-element composite alloying to match the contents of carbon, silicon, manganese, magnesium, rare earth, phosphorus and sulfur, and various performance indexes of the cast nodular cast pipe meet the design requirements, and has the characteristics of high strength, high toughness and long service life.
Description
Technical Field
The invention relates to the technical field of precision casting, in particular to a nodular cast tube.
Background
The cast iron steel pipe is essentially a nodular cast iron pipe, and the nodular cast iron pipe has the iron nature and the steel performance, so the nodular cast iron pipe is called as the nodular cast iron pipe. The graphite in the nodular cast iron pipe exists in a spherical shape, and the size of the graphite is generally 6 to 7 grades. The quality requires that the spheroidization grade of the cast iron pipe is controlled to be 1-3 grade, and the spheroidization rate is more than or equal to 80 percent, so that the mechanical property of the material is better improved, and the material has the essence of iron and the performance of steel. The annealed ductile iron pipe has a metallographic structure of ferrite and a small amount of pearlite, and has good mechanical properties, so that the ductile iron pipe is called a cast iron steel pipe. The steel has the advantages of iron nature, excellent steel performance and corrosion resistance, good extensibility and simple installation, and is mainly used for water supply, gas transmission and the like of municipal industrial and mining enterprises.
At present, the ductile cast iron pipe requires the bridge to have high strength and high toughness. The strength performance of the existing material can not meet the design requirement, so that a nodular cast iron pipe with high strength and high toughness needs to be developed to meet the use requirement.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the nodular cast iron pipe which has high strength, high toughness and long service life.
In order to achieve the purpose, the invention provides a nodular cast iron pipe which comprises the following compositions in parts by mass: 394 parts of pig iron 147-.
The invention further comprises the following compositions in parts by mass: 147 parts of pig iron, 47 parts of steel, 4 parts of chromium, 13 parts of nickel, 5 parts of manganese, 4 parts of phosphorus, 3 parts of sulfur, 6 parts of composite alloy, 3 parts of magnesium and 4 parts of rare earth.
The invention further comprises the following compositions in parts by mass: 268 parts of pig iron, 64 parts of steel, 10 parts of chromium, 23 parts of nickel, 8 parts of manganese, 6 parts of phosphorus, 5 parts of sulfur, 11 parts of composite alloy, 5 parts of magnesium and 6 parts of rare earth.
The invention further comprises the following compositions in parts by mass: 394 parts of pig iron, 76 parts of steel, 13 parts of chromium, 35 parts of nickel, 12 parts of manganese, 10 parts of phosphorus, 8 parts of sulfur, 16 parts of composite alloy, 8 parts of magnesium and 9 parts of rare earth.
Further in the present invention, the complex alloy is an alloy of nickel, molybdenum, chromium and copper.
The beneficial effect of adopting above-mentioned technical scheme is: the aim of refining crystal grains and strengthening a matrix is achieved by adopting multi-element composite alloying to match with the contents of carbon, silicon, manganese, magnesium, rare earth, phosphorus and sulfur, and various performance indexes of the cast nodular cast iron pipe meet the design requirements, so that the cast nodular cast iron pipe has the characteristics of high strength, high toughness and long service life.
Detailed Description
The present invention will be further described with reference to the following examples.
Example 1:
the nodular cast tube comprises the following compositions in parts by weight: 147 parts of pig iron, 47 parts of steel, 4 parts of chromium, 13 parts of nickel, 5 parts of manganese, 4 parts of phosphorus, 3 parts of sulfur, 6 parts of composite alloy, 3 parts of magnesium and 4 parts of rare earth.
Example 2:
the nodular cast tube comprises the following compositions in parts by weight: 268 parts of pig iron, 64 parts of steel, 10 parts of chromium, 23 parts of nickel, 8 parts of manganese, 6 parts of phosphorus, 5 parts of sulfur, 11 parts of composite alloy, 5 parts of magnesium and 6 parts of rare earth.
Example 3:
the nodular cast tube comprises the following compositions in parts by weight: 394 parts of pig iron, 76 parts of steel, 13 parts of chromium, 35 parts of nickel, 12 parts of manganese, 10 parts of phosphorus, 8 parts of sulfur, 16 parts of composite alloy, 8 parts of magnesium and 9 parts of rare earth.
Further, the composite gold in the above 3 embodiments is an alloy of nickel, molybdenum, chromium and copper.
The invention achieves the purposes of refining crystal grains and strengthening matrix by adopting multi-element composite alloying to match the contents of carbon, silicon, manganese, magnesium, rare earth, phosphorus and sulfur, and various performance indexes of the cast nodular cast pipe meet the design requirements, and has the characteristics of high strength, high toughness and long service life.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The nodular cast tube is characterized by comprising the following compositions in parts by mass: 394 parts of pig iron 147-.
2. The nodular cast iron pipe of claim 1, comprising the following composition in parts by mass: 147 parts of pig iron, 47 parts of steel, 4 parts of chromium, 13 parts of nickel, 5 parts of manganese, 4 parts of phosphorus, 3 parts of sulfur, 6 parts of composite alloy, 3 parts of magnesium and 4 parts of rare earth.
3. The nodular cast iron pipe of claim 1, comprising the following composition in parts by mass: 268 parts of pig iron, 64 parts of steel, 10 parts of chromium, 23 parts of nickel, 8 parts of manganese, 6 parts of phosphorus, 5 parts of sulfur, 11 parts of composite alloy, 5 parts of magnesium and 6 parts of rare earth.
4. The nodular cast iron pipe of claim 1, comprising the following composition in parts by mass: 394 parts of pig iron, 76 parts of steel, 13 parts of chromium, 35 parts of nickel, 12 parts of manganese, 10 parts of phosphorus, 8 parts of sulfur, 16 parts of composite alloy, 8 parts of magnesium and 9 parts of rare earth.
5. The nodular cast tube of claim 1, wherein the composite alloy is an alloy of nickel, molybdenum, chromium and copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911043307.9A CN110760747A (en) | 2019-10-30 | 2019-10-30 | Nodular cast tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911043307.9A CN110760747A (en) | 2019-10-30 | 2019-10-30 | Nodular cast tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110760747A true CN110760747A (en) | 2020-02-07 |
Family
ID=69334725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911043307.9A Withdrawn CN110760747A (en) | 2019-10-30 | 2019-10-30 | Nodular cast tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110760747A (en) |
-
2019
- 2019-10-30 CN CN201911043307.9A patent/CN110760747A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200207 |
|
| WW01 | Invention patent application withdrawn after publication |