CN103255355A - Infinite chilled straightening roll for rolling steel - Google Patents
Infinite chilled straightening roll for rolling steel Download PDFInfo
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- CN103255355A CN103255355A CN2013102030064A CN201310203006A CN103255355A CN 103255355 A CN103255355 A CN 103255355A CN 2013102030064 A CN2013102030064 A CN 2013102030064A CN 201310203006 A CN201310203006 A CN 201310203006A CN 103255355 A CN103255355 A CN 103255355A
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Abstract
The invention belongs to the technical field of a steel rolling machine, and particularly relates to an infinite chilled straightening roll for rolling steel. The infinite chilled straightening roll for rolling steel is prepared from chromium, nickel, molybdenum, copper, carbon, silicon, manganese and iron which are used as raw material ingredients according to a certain weight ratio. The infinite chilled straightening roll is simple in preparation, common and available in raw material, low in production cost, good in product performance, simple in technological requirements, suitable for wide popularization and use; the labor intensity of a worker can be effectively reduced; and the production efficiency is improved.
Description
(1) technical field
The invention belongs to the rolling machinery technical field, particularly a kind of steel rolling indefinite chill straightening roll.
(2) background technology
Straightening roll is that shaped steel is produced indispensable wear-resistant process spare part, and its surface working becomes certain pass, and when the aligning steel, the pass surface directly contacts with shaped steel, under the effect of temperature and pressure, bears and rolls and sliding friction, serious wear.
At present, China's straightening of shapes roller adopts the higher nickel chromium triangle molybdenum infinitely chilled ductile cast iron of content to make mostly.Because China's metallic nickel resource is very deficient, expensive, makes that the straightening roll manufacturing cost is higher, has restricted the reduction of shaped steel production cost.Reduce the formation production cost two kinds of approach are arranged: the one, significantly increase nickel, chromium, molybdenum content, cause the straightening roll manufacturing cost to increase, greatly improve the wear resistance of straightening roll; The 2nd, reduce nickel, chromium, molybdenum content, reduce the straightening roll manufacturing cost, its wear resistance is remained in satisfied " ECONOMIC PRODUCTION LOT SIZE " required optimum range.
That walks article one approach has Shandong Institute of Metallurgical Technology (CN1080666A) and a Great Wall steel mill (CN102690C).The chromium of Shandong Institute of Metallurgical Technology＞20%, nickel＞1.5%, molybdenum＞1.8% o'clock, " disposable steel transportation amount (work-ing life) " is 10 ~ 50 times of common middle and high chrome cast iron straightening roll; The alloy content of Great Wall steel mill is then higher: chromium＞26 ~ 32%, nickel＞5 ~ 8%, the life-span improves more than 3 times than steel alloy.But produce the restriction that ordered goods by market, small batch, many kinds are big characteristics and a trend of organization of production, owing to change a kind, just need straightening roll roll shape of loaded vehicle, therefore, pursue too high " disposable work-ing life " and do not meet and produce reality, so above-mentioned patented product is not all promoted the use of in China's straightening of shapes industry.
(3) summary of the invention
The present invention provides a kind of steel rolling indefinite chill straightening roll simple, that production cost is low for preparing in order to remedy the deficiencies in the prior art.
The present invention is achieved through the following technical solutions:
A kind of steel rolling indefinite chill straightening roll, it is characterized by, raw material by following weight fraction is formed: chromium 1.2 ~ 1.5%, nickel 1.3 ~ 1.5%, molybdenum 0.2 ~ 0.3%, copper 0.4 ~ 0.6%, carbon 3.3 ~ 3.7%, silicon 0.6 ~ 0.8%, manganese 0.3 ~ 0.5%, sulphur, phosphorus content all are lower than 0.01%, and all the other are iron.
The weight proportion of its preferred each composition is:
Chromium 1.35%, nickel 1.4%, molybdenum 0.25%, copper 0.5%, carbon 3.5%, silicon 0.7%, manganese 0.4%, sulphur, phosphorus content all are lower than 0.01%, and all the other are iron.
The raw material sources of described chromium are one or more in little carbon chromium, low-carbon (LC) chromium, middle carbon chromium and the high carbon chromium.
The raw material sources of described nickel are 99 nickel plates, and the raw material sources of silicon are 75 silicon, and the raw material sources of molybdenum are 50% concentrated molybdenum ore.
The raw material sources of described manganese are one or more in electrolytic manganese, low Carbon Manganese and the high-carbon manganese.
The iron rule raw material sources then are the pig iron or iron and steel scrap, and copper then is fine copper.
Raw material of the present invention generally is easy to get, and under the prerequisite that reduces nickel, chromium, molybdenum content, improves the content of carbon, strengthened the toughness of product, make product chill degree from the epidermis to inside that transitional the variation be taken place, same material forms three kinds of structures, and structure cohesion does not have the boundary line.
In the proportion of raw materials process, need the content of strict control sulphur and phosphorus, otherwise influence the toughness of product.
The present invention prepares simply, and raw material generally is easy to get, and production cost is low, good product performance, and processing requirement is simple, can effectively reduce labor strength, enhances productivity, and is suitable for wide popularization and application.
(4) embodiment
Embodiment 1:
Use little carbon chromium or low-carbon (LC) chromium, 99 nickel plates, electrolytic manganese, 75 silicon, 50% concentrated molybdenum ore and the pig iron to be raw material, raw material is dropped in the stove in 1480 ~ 1500 ℃ of following refinery, obtain the alloy solution of fusion, it is cast in the mould under normal temperature environment, obtain straightening roll after the cooling, the weight proportion of each composition is in the final straightening roll: chromium 1.2%, nickel 1.3%, molybdenum 0.2%, copper 0.4%, carbon 3.3%, silicon 0.6%, manganese 0.3%, sulphur, phosphorus content all are lower than 0.01%, and all the other are iron.
Straightening roll is divided into limitless spoken parts in traditional operas, Ma Gang, ash mouthful three kinds of structures from the epidermis to inside.
Embodiment 2:
Carbon chromium, 99 nickel plates, low Carbon Manganese, 75 silicon, 50% concentrated molybdenum ore and the pig iron are raw material in using, raw material is dropped in the stove in 1480 ~ 1500 ℃ of following refinery, obtain the alloy solution of fusion, it is cast in the mould under normal temperature environment, obtain straightening roll after the cooling, the weight proportion of each composition is in the final straightening roll: chromium 1.35%, nickel 1.4%, molybdenum 0.25%, copper 0.5%, carbon 3.5%, silicon 0.7%, manganese 0.4%, sulphur, phosphorus content all are lower than 0.01%, and all the other are iron.
Straightening roll is divided into limitless spoken parts in traditional operas, Ma Gang, ash mouthful three kinds of structures from the epidermis to inside.
Embodiment 3:
Use high carbon chromium, 99 nickel plates, high-carbon manganese, 75 silicon, 50% concentrated molybdenum ore and iron and steel scrap to be raw material, raw material is dropped in the stove in 1480 ~ 1500 ℃ of following refinery, obtain the alloy solution of fusion, it is cast in the mould under normal temperature environment, obtain straightening roll after the cooling, the weight proportion of each composition is in the final straightening roll: chromium 1.5%, nickel 1.5%, molybdenum 0.3%, copper 0.6%, carbon 3.7%, silicon 0.8%, manganese 0.5%, sulphur, phosphorus content all are lower than 0.01%, and all the other are iron.
Straightening roll is divided into limitless spoken parts in traditional operas, Ma Gang, ash mouthful three kinds of structures from the epidermis to inside.
Claims (5)
1. steel rolling indefinite chill straightening roll, it is characterized by, raw material by following weight fraction is formed: chromium 1.2 ~ 1.5%, nickel 1.3 ~ 1.5%, molybdenum 0.2 ~ 0.3%, copper 0.4 ~ 0.6%, carbon 3.3 ~ 3.7%, silicon 0.6 ~ 0.8%, manganese 0.3 ~ 0.5%, sulphur, phosphorus content all are lower than 0.01%, and all the other are iron.
2. steel rolling according to claim 1 indefinite chill straightening roll, it is characterized by, raw material by following weight fraction is formed: chromium 1.35%, nickel 1.4%, molybdenum 0.25%, copper 0.5%, carbon 3.5%, silicon 0.7%, manganese 0.4%, sulphur, phosphorus content all are lower than 0.01%, and all the other are iron.
3. steel rolling according to claim 1 and 2 indefinite chill straightening roll, it is characterized in that: the raw material sources of described chromium are one or more in little carbon chromium, low-carbon (LC) chromium, middle carbon chromium and the high carbon chromium.
4. steel rolling according to claim 1 and 2 indefinite chill straightening roll, it is characterized in that: the raw material sources of described nickel are 99 nickel plates, and the raw material sources of silicon are 75 silicon, and the raw material sources of molybdenum are 50% concentrated molybdenum ore.
5. steel rolling according to claim 1 and 2 indefinite chill straightening roll, it is characterized in that: the raw material sources of described manganese are one or more in electrolytic manganese, low Carbon Manganese and the high-carbon manganese.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310203006.4A CN103255355B (en) | 2013-05-28 | 2013-05-28 | Steel rolling indefinite chill straightening roll |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310203006.4A CN103255355B (en) | 2013-05-28 | 2013-05-28 | Steel rolling indefinite chill straightening roll |
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| CN103255355A true CN103255355A (en) | 2013-08-21 |
| CN103255355B CN103255355B (en) | 2015-11-25 |
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| CN201310203006.4A Active CN103255355B (en) | 2013-05-28 | 2013-05-28 | Steel rolling indefinite chill straightening roll |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005024084A1 (en) * | 2003-09-09 | 2005-03-17 | Roche Castings Pty Ltd | An alloy steel composition |
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- 2013-05-28 CN CN201310203006.4A patent/CN103255355B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005024084A1 (en) * | 2003-09-09 | 2005-03-17 | Roche Castings Pty Ltd | An alloy steel composition |
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