CN107779734A - A kind of chrome alloy cast iron grate preparation method - Google Patents
A kind of chrome alloy cast iron grate preparation method Download PDFInfo
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- CN107779734A CN107779734A CN201610711910.XA CN201610711910A CN107779734A CN 107779734 A CN107779734 A CN 107779734A CN 201610711910 A CN201610711910 A CN 201610711910A CN 107779734 A CN107779734 A CN 107779734A
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- Prior art keywords
- cast iron
- alloy cast
- chrome alloy
- preparation
- mixture
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/08—Making cast-iron alloys
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses a kind of chrome alloy cast iron grate preparation method, comprise the following steps：The 3h of melting 2 at 1750~1950 DEG C is placed in after first the above-mentioned raw material in addition to titanium is mixed, obtain molten thing, molten thing is poured into it again in the container for the composite modifier for placing vanadium iron, FeTi40 A ferrotianium and xt35 rare earth ferrosilicon alloy and glass dust composition, obtain molten mixture, after its cooling, chrome alloy cast iron is made；Processing method obtains high-precision finished product to carry out soft annealing, machining shaping, quenching, tempering successively to its spray after cooling.
Description
Technical field
The invention belongs to casting technology field, and in particular to a kind of chrome alloy cast iron grate preparation method.
Background technology
There are the rough casting that the chrome alloy cast iron of high rigidity and high-wearing feature is mainly used in casting and pouring, cast cast
The spray of the chrome alloy cast iron of shaping, its actual hardness are often up to more than HRC50, much larger than what is recommended with reference to GB/T8263
Hardness regulation --- HRC≤46 after superhigh-chrome wear-resistant white cast iron heat-treatment of annealing.If by the quenched tempering heat of spray
Directly applied after processing, it is excessive to there is the fit clearance of some casting, and sealing is bad, the defects of easy premature breakdown, in recent years
Come, to solve this problem, more chemical composition, alloying, the moulding cast in Cr series white cast iron of emphasis of concern and
On the Optimal improvements of its Q-tempering technique etc., though it achieves some effects, do not tackle the problem at its root yet, so as to hinder
The popularization and application of Cr series white cast iron are hindered.
The content of the invention
In order to overcome above-mentioned technical problem existing for prior art, it is an object of the present invention to provide a kind of conjunction of chromium
Golden cast iron grate preparation method, make it have stronger hardness and wearability.
A kind of chrome alloy cast iron grate preparation method provided by the invention, comprises the following steps：
（1）By component and content be 2.9~4.2wt% carbon, 26~37wt% chromium, 0.6~0.9wt% silicon, 0.6~
1.0wt% manganese, 0.8~1.3wt% nickel, 0.05~1.0wt% copper, 0.05~1.0wt% vanadium ,≤0.05wt%
The phosphorus of sulphur and≤0.05wt%, and surplus mix for iron phase, obtain mixture；
（2）Mixture is placed in melting 2-3h at 1750~1950 DEG C, obtains molten thing；
（3）It is 18% according to percentage by weight：12wt%：50wt%：20wt% ratio by the vanadium iron marked as V401,
FeTi40-A ferrotianium and the mixing of xt35 rare earth ferrosilicon alloy and glass dust, obtain composite modifier, then by molten thing
Pour into it and be placed with the container of composite modifier, wherein, composite modifier is 0.4~0.8wt% of molten thing, is obtained
Molten mixture；
（4）After the cooling of molten mixture, chrome alloy cast iron is made.
A kind of chrome alloy cast iron grate preparation method provided by the invention, its advantage are that obtained evanohm is cast
Iron is characterized, from its result, Rockwell hardness HRC >=63 of chrome alloy cast iron, alloy after this optimized integration into
Point, chrome alloy cast iron had both been had higher hardness, maintain preferable toughness again；Preparation method is simple, efficient, composite inoculating
The follow-up addition of agent improves the quality of metallurgy and enhances the institutional framework of matrix, has higher hardness and wearability to be made
Chrome alloy cast iron lay a good foundation；Processing method science, effectively.
Embodiment
With reference to one embodiment, a kind of chrome alloy cast iron grate preparation method provided by the invention is carried out in detail
Explanation.
Embodiment
A kind of chrome alloy cast iron grate preparation method of the present embodiment, comprises the following steps：
（1）It is 4.2wt% carbon, 29wt% chromium, 0.9wt% silicon, 1.0wt% manganese, 1.3wt% by component and content
Nickel, 0.08wt% copper, 1.0wt% vanadium, 0.05wt% sulphur and 0.05wt% phosphorus, and surplus are iron phase mixing, are obtained
To mixture；
（2）Mixture is placed in melting 2h at 1950 DEG C, obtains molten thing；
（3）It is 18% according to percentage by weight：12wt%：50wt%：20wt% ratio by the vanadium iron marked as V401,
FeTi40-A ferrotianium and the mixing of xt35 rare earth ferrosilicon alloy and glass dust, obtain composite modifier, then by molten thing
Pour into it and be placed with the container of composite modifier, wherein, composite modifier is the 0.8wt% of molten thing, is melted
Shape mixture；
（4）After the cooling of molten mixture, chrome alloy cast iron is made.
Claims (1)
- A kind of 1. chrome alloy cast iron grate preparation method, it is characterised in that：Comprise the following steps：（1）By component and content be 2.9~4.2wt% carbon, 26~37wt% chromium, 0.6~0.9wt% silicon, 0.6~ 1.0wt% manganese, 0.8~1.3wt% nickel, 0.05~1.0wt% copper, 0.05~1.0wt% vanadium ,≤0.05wt% The phosphorus of sulphur and≤0.05wt%, and surplus mix for iron phase, obtain mixture；（2）Mixture is placed in melting 2-3h at 1750~1950 DEG C, obtains molten thing；（3）It is 18% according to percentage by weight：12wt%：50wt%：20wt% ratio by the vanadium iron marked as V401, FeTi40-A ferrotianium and the mixing of xt35 rare earth ferrosilicon alloy and glass dust, obtain composite modifier, then by molten thing Pour into it and be placed with the container of composite modifier, wherein, composite modifier is 0.4~0.8wt% of molten thing, is obtained Molten mixture；（4）After the cooling of molten mixture, chrome alloy cast iron is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610711910.XA CN107779734A (en) | 2016-08-24 | 2016-08-24 | A kind of chrome alloy cast iron grate preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610711910.XA CN107779734A (en) | 2016-08-24 | 2016-08-24 | A kind of chrome alloy cast iron grate preparation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107779734A true CN107779734A (en) | 2018-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610711910.XA Pending CN107779734A (en) | 2016-08-24 | 2016-08-24 | A kind of chrome alloy cast iron grate preparation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108588463A (en) * | 2018-05-03 | 2018-09-28 | 中山铁王流体控制设备有限公司 | A kind of Monel casting alloy composite refining alterant |
-
2016
- 2016-08-24 CN CN201610711910.XA patent/CN107779734A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108588463A (en) * | 2018-05-03 | 2018-09-28 | 中山铁王流体控制设备有限公司 | A kind of Monel casting alloy composite refining alterant |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180309 |