CN1226108C - Cast oil roller - Google Patents
Cast oil roller Download PDFInfo
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- CN1226108C CN1226108C CN 00129823 CN00129823A CN1226108C CN 1226108 C CN1226108 C CN 1226108C CN 00129823 CN00129823 CN 00129823 CN 00129823 A CN00129823 A CN 00129823A CN 1226108 C CN1226108 C CN 1226108C
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- roller
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- roller shell
- oil plant
- casting
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Abstract
The present invention relates to a casting oil material roller which is formed by the combination of a roller sleeve and a mandrel. The present invention is characterized in that the roller sleeve is formed by the metallurgical fusing of a hard abrasion-proof outer layer and a strong-toughness inner layer. The chemical components of the outer layer of the roller sleeve contain 1.0 to 3.0 % of C, 0.4 to 1.2% of SiO, 0.2 to 1.2% of MnO and 10 to 28% of Cr and also contain one or more than two kinds of the following components: less than 4% of Mo, less than 4% of W, less than 2% of Ni, less than 2% of V, less than 2% of Nb, less than 0.2% of B and less than 0.2% of N, and the rest components are Fe and inevitable impurities. The inner layer is made of nodular iron or grey cast iron or cast steel. Products manufactured in a centrifugal casting method have the characteristics of abrasive resistance and good surface roughness resistance, and the period and the service life of grinding rollers are extended obviously.
Description
Technical field
The present invention relates to a kind of casting oil plant roller product, particularly a kind of oil plant roller that is combined by roller shell and mandrel belongs to the vitals on the oils industry crushing roll.Also be applicable to papermaking, rubber and plastics machine roller.
Background technology
Adopt in the operation process that leaches legal system oil in the oils industry, use crushing roll oil plants such as soybean to be rolled into the base sheet of 0.2-0.35mm, used oil plant roller requires bright and clean wear-resisting on the crushing roll, oil plant roller wearability and anti-rough surface deficiency that prior art is produced, short time uses roller shell surface, back heavy wear, pockmark and rough surface promptly to occur, the residual grease of base sheet after the leaching is increased, cause oil yield to reduce.The oil plant roller needs frequent reconditioning thus, reduces production efficiency and increases oil plant roll consumption and production cost.
Summary of the invention
The object of the present invention is to provide the good oil plant roller of a kind of wearability and anti-rough surface, its roller shell has good crack resistance simultaneously.
(1) technical scheme of the present invention is:
1. a kind of composite casting roller shell is provided, and it is made of the inside and outside two-layer of unlike material, is that the internal layer metallurgical melting by wear-resisting skin and obdurability becomes one.
A kind of multi-element alloyed high alloy material of outer use by the reasonable coupling of alloying elements such as C, Cr, obtains the M of hard high-wearing feature
7C
3The type carbide, it accounts for the area percentage of 8-30% in metallographic structure, be discontinuous strip or chrysanthemum shape and distribute, and the high strength matrix that cooperates alloy solid solution to strengthen guarantees excellent abrasive.According to concrete service condition, outer layer thickness is in 20-60 millimeter scope.
The percentage by weight of cladding material chemical composition is:
(1)C：1.0～3.0％
Carbon is that cladding material guarantees the necessary element of wearability, and carbon content is lower than 1.0% can not produce enough M
7C
3The type carbide is difficult to obtain very high wearability; On the other hand, can make carbide quantity too much and be continuous distributed at 3.0% o'clock, reduce the ability on roller shell crack resistance and antifatigue flake-off limit if phosphorus content surpasses.
(2)Cr：10～28％
Chromium is to obtain M
7C
3The important alloying element of type carbide and quenching degree mainly produces M when Cr＜10%
3C and M
23C
6Type carbide rather than acquisition M
7C
3Type is main carbide, and when Cr＞28, the excessive M of continuous distributed
7C
3The toughness and the thermal conductivity of type carbide grievous injury cladding material are damaged the crack resistance of roller shell and the ability on antifatigue flake-off limit simultaneously.
(3)Si：0.4～1.2％
Play the necessary element of deoxidation when silicon is melting, will tend to produce defective in the time of too much.
(4)Mn：0.2～1.2％
Manganese also plays deoxidation, also generates the MnS compound so that eliminate the illeffects of sulphur with sulphur simultaneously.
(5) Ren Xuan element
Except above-mentioned element, outer field high alloy material can also arbitrarily contain molybdenum (Mo), tungsten (W), nickel (Ni), vanadium (V), niobium (Nb), boron (B) and nitrogen (N) element outer field every performance is played auxiliary beneficial effect.
(6) impurity
Contain foreign matter of phosphor (P) and sulphur (S) during the outer used high alloy material melting of the present invention inevitably.In order to reduce outer field fragility, the weight percentage of phosphorus should be lower than 0.1%, and the weight percentage of sulphur should be lower than 0.06%.
2. the composite casting roller shell comprises the internal layer of a toughness, and its material is spheroidal graphite cast-iron or casting pig or cast steel, and major function is the back of the body bottom support that an obdurability is provided for the skin of high hardness wear-resisting, prevents the stressed cracking of cladding material, strengthens the bearing capacity of roller shell.
3. the present invention casts roller shell and adopts the manufacturing of centrifugal composite casting process.Oil plant roller main technique flow process is: metal mold coats → and preheating → melting → centrifugal casting roller shell skin → add covering slag → centrifugal casting roller shell internal layer → roller shell cooling and demolding → heat treatment → machine to install mandrel → finishing → check delivery additional.
4, roller shell and mandrel adopt hot charging or bolt that the mode of closing is combined the oil plant roller.
(2) the invention has the advantages that:
1. high alloy material has improved wearability as oil plant roller skin, has solved the coarse problem that goes out pockmark of wearing and tearing of oil plant roller short-term and roll surface.
2. the metal internal layer of obdurability has been avoided the Problem of Failure of roller shell cracking.
3. the centrifugal composite casting roller shell has been eliminated casting flaw, make organize fine and closely woven evenly, guaranteed the uniformity coefficient of whole roll surface hardness and wearability.
Convenient manufacturing process, saved expensive metallic element such as nickel.
The specific embodiment
According to the technical scheme of the present invention oil plant roller that to implement four specifications of centrifugal composite casting production be Φ 800 * 1500mm, particular content sees Table 1:
Table 1
| Embodiment | Outer | Internal layer | |||||||||
| Chemical composition (wt%) | Thickness (mm) | Material | Thickness (m m) | ||||||||
| C | Si | Mn | P | S | Cr | Mo | Other | ||||
| A | 1.23 | 0.76 | 0.70 | 0.03 | 0.03 | 12 | 0.82 | V0.80 | 35 | Magnesium iron | 75 |
| B | 2.64 | 0.54 | 0.66 | 0.06 | 0.03 | 15 | 0.64 | - | 28 | Gray iron | 92 |
| C | 2.66 | 0.55 | 0.62 | 0.06 | 0.02 | 18 | 0.64 | - | 26 | Magnesium iron | 94 |
| D | 2.90 | 0.77 | 0.60 | 0.04 | 0.01 | 20 | 1.2 | Ni1.20 | 40 | Cast steel | 80 |
The ultrasonic examination after machined of embodiment roller shell checks that the ectonexine fusion is good, adopts hot-assembling method and mandrel to be assembled into oil plant roller product respectively.
Roll surface was bright and clean after oil plant roller of the present invention used on the machine, and had kept roll shape that the grinding roller cycle is prolonged at double lastingly, had significantly improved the oil plant roller life-span.
Claims (3)
1. cast the oil plant roller for one kind, combine by roller shell and mandrel, it is characterized in that roller shell is to be made of the inside and outside two-layer of unlike material, the internal layer metallurgical melting of skin that it is wear-resisting and obdurability is that one becomes the composite roll cover, the percentage by weight of the outer chemical composition of roller shell is: C 1.0～3.0% Si 0.4～1.2%, Mn 0.2～1.2%, Cr 10～28%, also can contain Mo, W, Ni, V, Nb, B, N auxiliary element, all the other are Fe and unavoidable impurities.
2. a kind of casting oil plant roller according to claim 1 is characterized in that its roller shell internal layer material is spheroidal graphite cast-iron or casting pig or the cast steel with excellent toughness.
3. a kind of casting oil plant roller according to claim 1 and 2, it is characterized in that described roller shell skin and internal layer all adopt the centre spinning method composite casting, roller shell adopts hot charging after heat treatment and machining or the bolt handle closes mode and mandrel is combined into the oil plant roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00129823 CN1226108C (en) | 2000-10-26 | 2000-10-26 | Cast oil roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00129823 CN1226108C (en) | 2000-10-26 | 2000-10-26 | Cast oil roller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1350898A CN1350898A (en) | 2002-05-29 |
| CN1226108C true CN1226108C (en) | 2005-11-09 |
Family
ID=4593768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00129823 Expired - Fee Related CN1226108C (en) | 2000-10-26 | 2000-10-26 | Cast oil roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1226108C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886212A (en) * | 2010-06-30 | 2010-11-17 | 安徽省宁国诚信耐磨材料有限公司 | Sand casting grinding ball and heat treatment process thereof |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100392141C (en) * | 2005-04-20 | 2008-06-04 | 江苏共昌轧辊有限公司 | Improved composite high-chromium iron-cast roller |
| CN101229578B (en) * | 2007-01-25 | 2010-07-07 | 湘潭高耐合金制造有限公司 | Fabricating technology of cylinder barrel for train |
| CN101705435B (en) * | 2008-04-23 | 2011-12-28 | 安徽省凤形耐磨材料股份有限公司 | Production method of ultrahard high-chromium cast grinding ball |
| CN101851724A (en) * | 2010-04-15 | 2010-10-06 | 安徽省宁国诚信耐磨材料有限公司 | Phi-40-below sand casting high-wear-resistance grinding ball |
| CN105543639A (en) * | 2015-12-30 | 2016-05-04 | 河北津西钢铁集团大方重工科技有限公司 | Centrifugal ceramic composite vertical mill roller sleeve and manufacturing method thereof |
| CN108004458B (en) * | 2017-12-13 | 2021-01-08 | 中钢集团邢台机械轧辊有限公司 | Improved high-chromium iron roller for tungsten modification treatment |
| CN108411193B (en) * | 2018-03-15 | 2019-10-15 | 邢台德龙机械轧辊有限公司 | The manufacturing method of high chromium steel roller |
| CN109047341A (en) * | 2018-07-06 | 2018-12-21 | 莱芜莱钢集团金鼎轧辊有限公司 | A kind of Novel pinch roll |
| CN111101077B (en) * | 2018-10-26 | 2021-08-17 | 宝山钢铁股份有限公司 | Low-cost high-wear-resistance stretch reducing roller and heat treatment process thereof |
| CN114369766B (en) * | 2022-01-19 | 2022-11-01 | 河北技投机械设备有限公司 | High-carbon duplex stainless steel material and preparation method thereof |
-
2000
- 2000-10-26 CN CN 00129823 patent/CN1226108C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886212A (en) * | 2010-06-30 | 2010-11-17 | 安徽省宁国诚信耐磨材料有限公司 | Sand casting grinding ball and heat treatment process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1350898A (en) | 2002-05-29 |
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