CN103160699B - Process for producing copper-iron alloy for low-alloy grey cast ion cylinder sleeve - Google Patents
Process for producing copper-iron alloy for low-alloy grey cast ion cylinder sleeve Download PDFInfo
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- CN103160699B CN103160699B CN201310105724.8A CN201310105724A CN103160699B CN 103160699 B CN103160699 B CN 103160699B CN 201310105724 A CN201310105724 A CN 201310105724A CN 103160699 B CN103160699 B CN 103160699B
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Abstract
The invention discloses a process for producing copper-iron alloy for a low-alloy grey cast ion cylinder sleeve. In order to solve the technical problems of high production cost, high quality risk and large environment pollution existing in the material copper for casting the cylinder sleeve, the adopted technical scheme is that the production process comprises the following steps of: proportioning raw materials according to the following weight ratio; adding the proportioned carbon steel to a medium-frequency electric furnace and smelting into liquid; adding the proportioned high-purity graphite and waste copper to the medium-frequency electric furnace and continuing smelting; detecting while adding electrolytic copper for continuously smelting by utilizing a spectrograph to detect the weight percentage of copper in the copper iron alloy liquid, so that the content of the copper in the copper iron alloy liquid reaches more than 60%; and utilizing an overhead crane and a pouring ladle to pour copper iron alloy liquid to a cooling water pond for cooling for 10 minutes to 15 minutes when the temperature of the copper iron alloy liquid reaches 1370 DEG C to 1390 DEG C; and drying and packaging the cooled copper iron alloy blocks. The process has the beneficial effect of reasonably recycling the waste copper, reducing the production cost, improving the abrasive resistance of the cylinder sleeve and prolonging the service life of the cylinder sleeve.
Description
Technical field
The invention belongs to casting smelting Technology field, relate to a kind of production technique of copper-iron alloy, particularly a kind of technique of producing the copper-iron alloy of low-alloy grey-cast iron cylinder sleeve.
Background technology
Cylinder sleeve is the key components and parts being arranged in oil engine, is the strength member affecting engine power, life-span and environmental protection exhaust emissions amount.In the course of the work, table directly affecting by high-temperature high-pressure fuel gas in cylinder sleeve, and there is high-speed slide friction with piston ring and skirt of piston all the time, cylinder sleeve is ceaselessly worn, outside surface contacts with water coolant and is corroded, and the larger temperature difference of surfaces externally and internally makes cylinder sleeve produce serious thermal stresses, piston not only aggravates the friction of its internal surface to the transverse thrust of cylinder sleeve, also can it produce bending, when transverse thrust changes direction, piston also clashes into cylinder sleeve, in order to work with following under this rugged environment, the starting material that production cylinder sleeve adopts must possess certain physical strength, wear-resistant, high temperature resistant, high pressure resistant, corrosion resistant performance, wherein wear resistance is the most important.
In the numerous kinds of cylinder sleeve, low-alloy grey-cast iron cylinder sleeve Application comparison is extensive, alloying element wherein has boron, phosphorus, copper, chromium, vanadium, titanium, molybdenum, nickel, tin etc., adding of copper mainly improves matrix content of pearlite in alloy in metallographic structure, refine pearlite, thus improve hardness and tensile strength, improve the wear resistance of cylinder sleeve.At present in the castingprocesses of cylinder sleeve, adding of copper generally adopts electrolytic copper, copper scrap (copper scrap electric wire, copper scrap part, copper scrap pipe etc.), copper sponge etc.Electrolytic copper is the high purity copper that cupric is greater than 99.9%, and electrolysis production power consumption is high, makes the price of electrolytic copper higher, and copper coin must be cut into block before adding, so the cost adding electrolytic copper during casting cylinder sleeve is too high.Containing harmful elements such as lead, zinc, aluminium in copper scrap, be difficult to meet technological standard, be easy to occur quality problems so add copper scrap.Copper sponge copper content is low, and electric furnace to add specific absorption low, environmental pollution is large.
Summary of the invention
The object of the invention is in order to material therefor copper when solving casting cylinder sleeve that to there is production cost high, quality risk is large, the technical problem that environmental pollution is large, in order to address these problems, we devise a kind of technique of producing the copper-iron alloy of low-alloy grey-cast iron cylinder sleeve, utilize the copper-iron alloy of this explained hereafter on the basis meeting technological standard, solve electrolytic copper production cost too high, easily there are quality problems in copper scrap, the heavy-polluted technical barrier of copper sponge specific absorption low environment, this technique makes copper scrap obtain Appropriate application, reduce the production cost of cylinder sleeve, improve the wear resistance of cylinder sleeve, extend the work-ing life of cylinder sleeve.
The present invention for the technical scheme realizing goal of the invention and adopt is: a kind of technique of producing the copper-iron alloy of low-alloy grey-cast iron cylinder sleeve, and key is: described production technique comprises the following steps:
A, by following weight ratio proportioning raw material: copper scrap 51 ~ 55 parts, electrolytic copper 4 ~ 6 parts, carbon steel 37 ~ 40 parts, high purity graphite 2 ~ 4 parts;
B, the carbon steel got ready added electrosmelting of intermediate frequency and become liquid;
C, the high purity graphite got ready and copper scrap joined in middle frequency furnace and continues melting;
D, utilize spectrograph to detect the weight percent of copper in copper-iron alloy liquid in middle frequency furnace, frontier inspection is surveyed limit and is added electrolytic copper and continue melting, makes the content of copper in copper-iron alloy liquid reach more than 60%;
E, when the temperature of copper-iron alloy liquid reaches 1370 ~ 1390 DEG C, utilize overhead traveling crane hang with pouring ladle copper-iron alloy liquid pour into cooling basin cooling 10 ~ 15min;
F, by the airing of cooled copper-iron alloy block, packaging.
The weight ratio of each raw material described in step a is: copper scrap 51.2 parts, electrolytic copper 4 parts, carbon steel 37 parts, high purity graphite 2 parts.
The weight ratio of each raw material described in step a is: copper scrap 52 parts, electrolytic copper 4.8 parts, carbon steel 37.9 parts, high purity graphite 2.5 parts.
The weight ratio of each raw material described in step a is: copper scrap 52.9 parts, electrolytic copper 5.7 parts, carbon steel 38.5 parts, high purity graphite 2.9 parts.
The weight ratio of each raw material described in step a is: copper scrap 53.8 parts, electrolytic copper 5.9 parts, carbon steel 39.2 parts, high purity graphite 3.4 parts.
The weight ratio of each raw material described in step a is: copper scrap 55 parts, electrolytic copper 6 parts, carbon steel 40 parts, high purity graphite 3 parts.
The invention has the beneficial effects as follows: this technique with containing trace element carbon steel and copper scrap for main raw material, add a small amount of electrolytic copper and high purity graphite, in fusion process, frontier inspection survey limit adds electrolytic copper, the content of copper in copper-iron alloy liquid is made to reach more than 60%, the product copper-iron alloy finally obtained is under the prerequisite meeting technological standard, and the starting material copper needed for casting cylinder sleeve provides a kind of new production technique.This technique decreases the usage quantity of electrolytic copper, reduces production cost, under the prerequisite ensureing quality product, copper scrap is fully used simultaneously, it also avoid the environmental pollution using copper sponge to cause.Use carbon steel can strengthen hardness and the physical strength of copper-iron alloy, add high purity graphite and can strengthen high temperature resistant, high pressure resistant, corrosion-resistant, wear-resistant, the oxidation resistant performance of copper-iron alloy, thus improve the overall performance of cylinder sleeve, extend the work-ing life of cylinder sleeve.
Embodiment
Produce a technique for the copper-iron alloy of low-alloy grey-cast iron cylinder sleeve, key is: described production technique comprises the following steps:
A, by following weight ratio proportioning raw material: copper scrap 51 ~ 55 parts, electrolytic copper 4 ~ 6 parts, carbon steel 37 ~ 40 parts, high purity graphite 2 ~ 4 parts;
B, the carbon steel got ready added electrosmelting of intermediate frequency and become liquid;
C, the high purity graphite got ready and copper scrap joined in middle frequency furnace and continues melting;
D, utilize spectrograph to detect the weight percent of copper in copper-iron alloy liquid in middle frequency furnace, frontier inspection is surveyed limit and is added electrolytic copper and continue melting, makes the content of copper in copper-iron alloy liquid reach more than 60%;
E, when the temperature of copper-iron alloy liquid reaches 1370 ~ 1390 DEG C, utilize overhead traveling crane hang with pouring ladle copper-iron alloy liquid pour into cooling basin cooling 10 ~ 15min;
F, by the airing of cooled copper-iron alloy block, packaging.
The weight ratio of each raw material described in step a is: copper scrap 51.2 parts, electrolytic copper 4 parts, carbon steel 37 parts, high purity graphite 2 parts.
The weight ratio of each raw material described in step a is: copper scrap 52 parts, electrolytic copper 4.8 parts, carbon steel 37.9 parts, high purity graphite 2.5 parts.
The weight ratio of each raw material described in step a is: copper scrap 52.9 parts, electrolytic copper 5.7 parts, carbon steel 38.5 parts, high purity graphite 2.9 parts.
The weight ratio of each raw material described in step a is: copper scrap 53.8 parts, electrolytic copper 5.9 parts, carbon steel 39.2 parts, high purity graphite 3.4 parts.
The weight ratio of each raw material described in step a is: copper scrap 55 parts, electrolytic copper 6 parts, carbon steel 40 parts, high purity graphite 3 parts.
Owing to all containing trace element in carbon steel and copper scrap, so when selecting materials, select trace element carbon steel up to standard and copper scrap by inspection.
Embodiment 1, preparation carbon steel 550kg, electrolytic copper 60kg, carbon steel 400kg, high purity graphite 30kg produce, and the weight percent obtaining each element in copper-iron alloy through inspection institute is as shown in table 1:
Table 1
| Cu | Si | S | P | C | Pb |
| 61.00 | 1.27 | 0.06 | 0.05 | 2.78 | 0.02 |
| Sb | Zn | Sn | Al | V | Ti |
| 0.06 | 0.03 | 0.07 | 0.03 | 0.02 | 0.03 |
| Cr | Mn | As | B | Mg | Fe |
| 0.05 | 0.03 | 0.01 | 0.008 | 0.03 | All the other |
As shown in Table 1, in copper-iron alloy, the weight percent of each element meets the technical standards.
Embodiment 2, preparation carbon steel 538kg, electrolytic copper 59kg, carbon steel 392kg, high purity graphite 34kg produce, and the weight percent obtaining each element in copper-iron alloy through inspection institute is as shown in table 2:
Table 2
| Cu | Si | S | P | C | Pb |
| 61.50 | 1.25 | 0.07 | 0.06 | 2.65 | 0.03 |
| Sb | Zn | Sn | Al | V | Ti |
| 0.08 | 0.04 | 0.09 | 0.04 | 0.03 | 0.04 |
| Cr | Mn | As | B | Mg | Fe |
| 0.08 | 0.40 | 0.015 | 0.009 | 0.04 | All the other |
As shown in Table 2, in copper-iron alloy, the weight percent of each element meets the technical standards.
Embodiment 3, preparation carbon steel 529kg, electrolytic copper 57kg, carbon steel 385kg, high purity graphite 29kg produce, and the weight percent obtaining each element in copper-iron alloy through inspection institute is as shown in table 3:
Table 3
| Cu | Si | S | P | C | Pb |
| 61.30 | 1.3 | 0.09 | 0.07 | 2.9 | 0.026 |
| Sb | Zn | Sn | Al | V | Ti |
| 0.05 | 0.036 | 0.05 | 0.048 | 0.04 | 0.046 |
| Cr | Mn | As | B | Mg | Fe |
| 0.06 | 0.30 | 0.018 | 0.006 | 0.026 | All the other |
As shown in Table 3, in copper-iron alloy, the weight percent of each element meets the technical standards.
Embodiment 4, preparation carbon steel 520kg, electrolytic copper 48kg, carbon steel 379kg, high purity graphite 25kg produce, and the weight percent obtaining each element in copper-iron alloy through inspection institute is as shown in table 4:
Table 4
| Cu | Si | S | P | C | Pb |
| 62.50 | 1.29 | 0.06 | 0.065 | 3.1 | 0.04 |
| Sb | Zn | Sn | Al | V | Ti |
| 0.07 | 0.02 | 0.098 | 0.035 | 0.025 | 0.034 |
| Cr | Mn | As | B | Mg | Fe |
| 0.04 | 0.36 | 0.009 | 0.004 | 0.035 | All the other |
As shown in Table 4, in copper-iron alloy, the weight percent of each element meets the technical standards.
Embodiment 5, preparation carbon steel 512kg, electrolytic copper 40kg, carbon steel 370kg, high purity graphite 20kg produce, and the weight percent obtaining each element in copper-iron alloy through inspection institute is as shown in table 5:
Table 5
| Cu | Si | S | P | C | Pb |
| 61.20 | 1.32 | 0.08 | 0.058 | 2.2 | 0.038 |
| Sb | Zn | Sn | Al | V | Ti |
| 0.03 | 0.045 | 0.06 | 0.043 | 0.043 | 0.02 |
| Cr | Mn | As | B | Mg | Fe |
| 0.09 | 0.20 | 0.013 | 0.007 | 0.048 | All the other |
As shown in Table 5, in copper-iron alloy, the weight percent of each element meets the technical standards.
In sum, the copper-iron alloy of this explained hereafter is utilized to meet the technical standards, solve again when casting cylinder sleeve owing to adding the various problems that copper brings simultaneously, provide a kind of technique of acquisition copper newly, copper scrap is made to obtain Appropriate application, reduce the production cost of cylinder sleeve, improve the wear resistance of cylinder sleeve, extend the work-ing life of cylinder sleeve.
Claims (6)
1. produce a technique for the copper-iron alloy of low-alloy grey-cast iron cylinder sleeve, it is characterized in that: described production technique comprises the following steps:
A, by following weight ratio proportioning raw material: copper scrap 51 ~ 55 parts, electrolytic copper 4 ~ 6 parts, carbon steel 37 ~ 40 parts, high purity graphite 2 ~ 4 parts;
B, the carbon steel got ready added electrosmelting of intermediate frequency and become liquid;
C, the high purity graphite got ready and copper scrap joined in middle frequency furnace and continues melting;
D, utilize spectrograph to detect the weight percent of copper in copper-iron alloy liquid in middle frequency furnace, frontier inspection is surveyed limit and is added electrolytic copper and continue melting, makes the weight percent of copper in copper-iron alloy liquid reach more than 60%;
E, when the temperature of copper-iron alloy liquid reaches 1370 ~ 1390 DEG C, utilize overhead traveling crane hang with pouring ladle copper-iron alloy liquid pour into cooling basin cooling 10 ~ 15min;
F, by the airing of cooled copper-iron alloy block, packaging.
2. a kind of technique of producing the copper-iron alloy of low-alloy grey-cast iron cylinder sleeve according to claim 1, is characterized in that: the weight ratio of each raw material described in step a is: copper scrap 51.2 parts, electrolytic copper 4 parts, carbon steel 37 parts, high purity graphite 2 parts.
3. a kind of technique of producing the copper-iron alloy of low-alloy grey-cast iron cylinder sleeve according to claim 1, is characterized in that: the weight ratio of each raw material described in step a is: copper scrap 52 parts, electrolytic copper 4.8 parts, carbon steel 37.9 parts, high purity graphite 2.5 parts.
4. a kind of technique of producing the copper-iron alloy of low-alloy grey-cast iron cylinder sleeve according to claim 1, is characterized in that: the weight ratio of each raw material described in step a is: copper scrap 52.9 parts, electrolytic copper 5.7 parts, carbon steel 38.5 parts, high purity graphite 2.9 parts.
5. a kind of technique of producing the copper-iron alloy of low-alloy grey-cast iron cylinder sleeve according to claim 1, is characterized in that: the weight ratio of each raw material described in step a is: copper scrap 53.8 parts, electrolytic copper 5.9 parts, carbon steel 39.2 parts, high purity graphite 3.4 parts.
6. a kind of technique of producing the copper-iron alloy of low-alloy grey-cast iron cylinder sleeve according to claim 1, is characterized in that: the weight ratio of each raw material described in step a is: copper scrap 55 parts, electrolytic copper 6 parts, carbon steel 40 parts, high purity graphite 3 parts.
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| CN107270597A (en) * | 2017-07-06 | 2017-10-20 | 苏州泰隆制冷有限公司 | A kind of fire-resistant high-performance copper-iron alloy reservoir |
| CN107321939A (en) * | 2017-07-20 | 2017-11-07 | 河北城大金属集团有限公司 | Small block monel preparation method based on washing process |
| CN107739860A (en) * | 2017-10-16 | 2018-02-27 | 江西保太有色金属集团有限公司 | A kind of inexpensive regeneration method of waste metal |
| CN109648265A (en) * | 2018-12-27 | 2019-04-19 | 四川艾格瑞特模具科技股份有限公司 | A kind of method of highly-efficient processing production precision machinery |
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| SU534515A1 (en) * | 1974-11-18 | 1976-11-05 | Предприятие П/Я Р-6575 | Iron based alloy |
| CN1145415A (en) * | 1996-03-12 | 1997-03-19 | 樊显理 | Low Ni alum Ti alloyed wearproof cast iron |
| CN101250658A (en) * | 2008-03-28 | 2008-08-27 | 常州武帆合金有限公司 | Nickel copper alloy |
| CN101435035A (en) * | 2008-12-23 | 2009-05-20 | 俞荣华 | High-strength wear resistant brass |
| CN102534089A (en) * | 2012-01-18 | 2012-07-04 | 邢台金后盾精密机械有限公司 | Alloy cast iron rotor seat of twin-screw compressor |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU534515A1 (en) * | 1974-11-18 | 1976-11-05 | Предприятие П/Я Р-6575 | Iron based alloy |
| CN1145415A (en) * | 1996-03-12 | 1997-03-19 | 樊显理 | Low Ni alum Ti alloyed wearproof cast iron |
| CN101250658A (en) * | 2008-03-28 | 2008-08-27 | 常州武帆合金有限公司 | Nickel copper alloy |
| CN101435035A (en) * | 2008-12-23 | 2009-05-20 | 俞荣华 | High-strength wear resistant brass |
| CN102534089A (en) * | 2012-01-18 | 2012-07-04 | 邢台金后盾精密机械有限公司 | Alloy cast iron rotor seat of twin-screw compressor |
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