CN1040226A - Phosphorus, copper, chromium, titanium phosphorus series wear-resistant cast iron material - Google Patents
Phosphorus, copper, chromium, titanium phosphorus series wear-resistant cast iron material Download PDFInfo
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- CN1040226A CN1040226A CN 88109055 CN88109055A CN1040226A CN 1040226 A CN1040226 A CN 1040226A CN 88109055 CN88109055 CN 88109055 CN 88109055 A CN88109055 A CN 88109055A CN 1040226 A CN1040226 A CN 1040226A
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Abstract
Phosphorus, copper, chromium, titanium phosphorus series wear-resistant cast iron material.
Phosphorus, copper, chromium, titanium antifriction cast iron belong to phosphorus series wear-resistant cast iron novel material in the metal material field.Can be used for casting not only wear-resisting but also complex-shaped mechanical part, as gear, cam etc.The present invention adds the chromium element on the basis of phosphorus, copper, titanium alloy material, and has provided the composition scope of broad.The wear resistance of new material improves more than 2 times than HT20-40 graphitic cast iron, and has the favorable mechanical performance, and the cost raising is no more than 50%.
Description
The invention belongs to phosphorus series wear-resistant cast iron novel material in the metal material field.The component of machine such as gear, the cam etc. that can be used for casting wear-resistant.
Though the mechanical property of graphitic cast iron is good, but wear no resistance, adopt the cast iron of high phosphorus (P%=0.5～0.7%), iron phosphide eutectic is present on the softer metallic matrix with hard skeleton, thereby improved the wear resistance of cast iron, but iron phosphide eutectic is crisp, and its only suitable shape is uncomplicated, bears the part of working under static load and the pressurized situation.
Weakness for " crisp, split, pine " that overcome high-phosphorous iron, keep its wear resistance again, a kind of phosphorus, copper, titanium abrasion resistance material have appearred again, on the books in " cast iron is founded " (book number 15033,5484) book chapter 5 first segment that China Machine Press publishes, Luoyang City Science and Technology Association compiles, its Chemical Composition is as follows:
| C％ | Si% | Mn% | P% | S% | Cu% | Ti% |
| 2.9 ～3.2 | 1.2 ～1.7 | 0.5 ～0.9 | 0.35 ～0.6 | ≤0.12 | 0.6 ～1.0 | 0.09 ～0.15 |
This cast alloy iron has kept the wear resistance of high-phosphorous iron, and has improved mechanical property, thereby is widely used on lathe, but this cast alloy iron has following three shortcomings:
1, in order to obtain the favorable mechanical performance, must keep low-carbon-equivalent (C
E=3.5～4), thereby its silicon content is low, when Si＜1.6%, very easily occurs spoken parts in traditional operas during the casting small workpiece.
2, for keeping its wear resistance, can not reduce phosphorus content, and carbon equivalent is low, has enlarged solidification zone, workpiece is prone to rarefaction defect.
3, the P-Cu-Ti cast alloy iron also must add 25～40% steel scrap amount to raw-materially having relatively high expectations, will selecting high-quality base iron for use during batching, to guarantee dense structure, improves mechanical property.
The objective of the invention is to find a kind ofly not only to have high wear resistance but also good mechanical property is arranged, can also overcome the new material of P-Cn-Ti cast alloy iron shortcoming, its Chemical Composition is as follows:
| C％ | Si% | Mn% | P% | S% | Cu% | Ti% | Cr% |
| 2.7 ～3.6 | 1.71 ～2.5 | 0.5 ～1.1 | 0.22 ～0.34 | ≤0.1 | 0.6 ～1.0 | 0.08 ～0.15 | 0.25 ～0.6 |
The present invention has added alloying elements cr on P-Cu-Ti alloy material basis, it can change the tissue of cast iron, makes the perlite refinement, and graphite size evenly when Cr and Cu, Ti exist simultaneously, also can make the thinning microstructure effect of Cu more obvious.Chromium and iron can form continuous solid solution, improved the intensity of matrix, and chromium can form multiple carbide with carbon, the avidity of itself and carbon greater than Mn, Fe, it can replace iron and form compound cementite (F
eCr)
3C, hardness ratio Fe
3The C height, the complicated carbide of formation (CrFe)
7C
3, (CrFe)
23C
6Can improve the wear resistance of cast iron greatly.
The present invention has following advantage:
1, since Cr, Cu to the refining effect of tissue, and Ti makes structure of cast iron densification of the present invention to the cleaning action of molten iron, (HB215～HB285) is about its wear resistance doubles than P-Cu-Ti cast iron to have higher hardness.
2, owing to added chromium, make the dense structure of cast iron, the antioxygen increase, thereby part processing rear surface smooth finish can improve secondary.
3, material composition wide ranges of the present invention, when P increases to 0.6%, Cu increases to 1.5%, and Si increases at 2.5% o'clock and still can keep the favorable mechanical performance.
4, carbon and silicon equivalent of the present invention close with the eutectic composition (CE=3.3～4.5), the molten iron good fluidity, P% is low, has dwindled solidification zone, can obtain abundant feeding during work-piece cools, thereby the scrap rate that the probability of rarefaction defect is few, can reduce foundry goods appears in workpiece.
5, under identical carbon-containing condition, the probability that spoken parts in traditional operas occurs is few, and the possibility that cracks is few, therefore can be used for casting complex-shaped foundry goods.
6, melting process of the present invention is simple, melting unit use cupola furnace or coal-powder boiler all can, base iron and furnace charge are not had particular requirement, and can adopt conventional casting, be convenient to promote the use of.
7, cutting ability is better, available conventional cutter processing, and processing back smooth finish can improve 2 grades, and the alloying element total amount is low, and its cost is close with the P-Cu-Ti cast alloy iron.Be no more than 50% than the raising of HT20-40 graphitic cast iron cost.And its wear resistance is than more than the high twice of HT20-40 graphitic cast iron.
Embodiment:
On May 25th, 1987, in Nanning step-down gear factory 1.5 tons of cards waist three joint stoves, carry out melting, batch weight 150Kg, proportion scale: base iron: foundry return: steel scrap=50: 30: 20.
Various batching quantity in every batch of material:
| Title | The version number | Weight (kg) | Title | The trade mark | Weight (Kg) |
| Base iron | Yingshan Mountains iron (casting 20) | 75 | Si iron | Silicon 75 | 1.5 |
| Foundry return | HT20～40 | 15 | Mn iron | Manganese 5 | 0.42 |
| Foundry return | This cast alloy iron | 15 | Cr iron | Chromium 4 | 1.0 |
| Steel scrap | A 3Stub bar | 45 | P iron | Ferrophosphorus 1 | 2.3 |
| Coke | Coke charge | 20 | Ti iron | Titanium 251 | 0.63 |
| Wingdale | 18 | Red copper | Technical grade | 1.073 |
The molten iron temperature of coming out of the stove: 1410 ℃; Pouring temperature: 1370 ℃
Alloy adds mode: Cu and is placed on molten iron tank and pours in the bag, and all the other alloys add after by stove, and molten iron will stir in bag fully, makes it even.
Workpiece casting order: water smallclothes, thin-wall part earlier, after water big part, heavy section casting.
Water the cast alloy iron composition that casts out:
| Bag is not | C％ | Si% | Mn% | S% | P% | Cr% | Cu% | Ti% |
| Second bag | 3.14 | 1.81 | 0.64 | 0.094 | 0.236 | 0.367 | 0.813 | 0.096 |
Water the cast alloy iron that casts out and do anti-bending test in Guangxi University Experiments of Machanics chamber, other test is carried out in Nanning City seal machine factory, and its performance is as follows:
Analyse test center in differentiation and make the metallographic examination situation
| The Graphite Distribution shape | Graphite length | Perlite quantity | The perlite spacing | Carbide quantity | The iron phosphide eutectic type | Iron phosphide eutectic quantity |
| A type shred shape | 10～ 15mm | ≥98％ | 4% is the fine-grannular disperse distributes | Binary ten ternary iron phosphide eutectics | 4％ |
Wear resistance is than more than the high twice of HT20-40, and under the heavy lift, wear resistance improves more remarkable.
Claims (2)
1, a kind of phosphorus series wear-resistant cast iron material that contains phosphorus, copper, titanium alloy element is characterized in that wherein containing the Chrome metal powder elementary composition of 0.25～0.6% (weight).
2, by the described phosphorus series wear-resistant cast iron material of claim 1, it is characterized in that wherein containing:
0.22 phosphorus～0.34%(weight)
1.71 silicon～2.5%(weight)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88109055 CN1012828B (en) | 1988-09-30 | 1988-09-30 | P, cu, cr,and ti series wear-resistant cast iron material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88109055 CN1012828B (en) | 1988-09-30 | 1988-09-30 | P, cu, cr,and ti series wear-resistant cast iron material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1040226A true CN1040226A (en) | 1990-03-07 |
| CN1012828B CN1012828B (en) | 1991-06-12 |
Family
ID=4835320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88109055 Expired CN1012828B (en) | 1988-09-30 | 1988-09-30 | P, cu, cr,and ti series wear-resistant cast iron material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1012828B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102634724A (en) * | 2012-05-15 | 2012-08-15 | 浙江金火机床有限公司 | Machine tool guide rail cast iron and preparation method thereof |
| CN103244400A (en) * | 2012-02-14 | 2013-08-14 | 无锡格兰登福托玛斯气动***有限公司 | Eccentric wheel for medical pump and process for manufacturing eccentric wheel |
| CN106086605A (en) * | 2016-06-23 | 2016-11-09 | 含山县朝霞铸造有限公司 | A kind of preparation technology being applicable to Bearing gear pearlite casting pig |
-
1988
- 1988-09-30 CN CN 88109055 patent/CN1012828B/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244400A (en) * | 2012-02-14 | 2013-08-14 | 无锡格兰登福托玛斯气动***有限公司 | Eccentric wheel for medical pump and process for manufacturing eccentric wheel |
| CN103244400B (en) * | 2012-02-14 | 2016-05-25 | 无锡格兰登福托玛斯气动***有限公司 | A kind of eccentric wheel for medical pump |
| CN102634724A (en) * | 2012-05-15 | 2012-08-15 | 浙江金火机床有限公司 | Machine tool guide rail cast iron and preparation method thereof |
| CN106086605A (en) * | 2016-06-23 | 2016-11-09 | 含山县朝霞铸造有限公司 | A kind of preparation technology being applicable to Bearing gear pearlite casting pig |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1012828B (en) | 1991-06-12 |
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