CN1054022A - Preparing technology for electric conducting wear-resistant alloy - Google Patents
Preparing technology for electric conducting wear-resistant alloy Download PDFInfo
- Publication number
- CN1054022A CN1054022A CN 89105307 CN89105307A CN1054022A CN 1054022 A CN1054022 A CN 1054022A CN 89105307 CN89105307 CN 89105307 CN 89105307 A CN89105307 A CN 89105307A CN 1054022 A CN1054022 A CN 1054022A
- Authority
- CN
- China
- Prior art keywords
- orders
- powder
- granularity
- blending process
- mmaterial
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Powder Metallurgy (AREA)
Abstract
The present invention adopts the existing problem of red copper clamp material to China, a kind of blending process of novel alloy material is proposed, through repeatedly on-site assessment and comparative evidence, use the novel alloy material of this invention development and make clamp, result of use is good, life-span height, remarkable in economical benefits, cost reduces about 70%, is an electric upsetter clamp material that is worthy to be popularized.
Description
The invention belongs to mmaterial compounding process field.
Inlet and exhaust valve is one of core component of oil engine, and China generally adopts electrically heated jumping-up and hot closed-die forging process integration to the processing molding method of valve at present.And the electric upsetter clamp is the key part on the electric upsetting machine, because of its special working conditions, requires this material not only should have electroconductibility preferably, and rational hardness and good wear resistance are arranged again.Electric upsetter clamp material, now domestic all is to adopt red copper basically, because red copper hardness is low, wear no resistance, the work-ing life of every pair of clamp (single face) is generally less than 2000, and cost is high again and directly influence production efficiency, in process of production again because of the red copper quick abrasion, copper-base easily sticks on the valve guide rod in process of production, and copper infiltrates the valve guide rod surface when causing thermal treatment, influences quality product.
The present invention adopts the existing problem of red copper clamp material at China just, proposes a kind of blending process of novel alloy material, and solved China the clamp material lifetime is low for a long time for this reason, the technical barrier that cost is high.
Technical solution of the present invention is:
One, raw and auxiliary material is prepared
(1) purpose: for guaranteeing alloy mass, required raw and auxiliary material must reach every technical requirements.
(2) raw and auxiliary material technical requirements:
1. the copper powder technical requirements sees Table one.
Table one
| Composition | Copper | Bismuth | Antimony | Arsenic | Sulphur | Oxygen | Other | Granularity |
| Content (%) | ≥99.7 | ＜0.002 | ＜0.05 | ＜0.05 | ＜0.01 | ＜0.1 | ＜0.2 | -150～-200 orders |
The preparation technology of copper powder:
The copper powder of newly buying must be through assay, can use after qualified.If oxygen level is too high, should handle (reduction sees Table two) by following technology.
A, reduction:
Table two
| Equipment | Temperature | The dress boat | Push away boat speed | Reducing medium |
| Two pipe direet-heating type resistance heading furnaces, 190 * 50 * 4000mm | 430±10℃ | The 2kg/ boat | 250mm/15 minute | Hydrogen |
B, pulverizing: the reduction accept, can in the roller milling machine, pulverize.
C, sieve: the copper powder through pulverizing, must sieve through-150 orders, sneak into inclusion in the powder with removal powder agglomates and other.
2. the technical requirements of tungsten powder sees Table three.
Table three
| Oxygen | Iron | Chloride residue | Loose density | Granularity |
| ＜0.25% | ＜0.1% | 0.13% | 3～4 gram/cm 3 | -180 orders |
3. the technical requirements of tungsten carbide powder sees Table four.
Table four
| Total carbon | Uncombined carbon | Granularity | Loose specific weight |
| 5.9～6.1% | 0.1% | -150～-200 orders | ＞4.5g/cm 3 |
4. the technical requirements of other powdered alloys:
Ni 〉=99.5%-200 order; Cr 〉=99%-200 order;
Sn 〉=99.5%-200 order.
5. the technical requirements of auxiliary material
Oleic acid: chemistry is blunt should to meet Shanghai Q/HG15-120-65 technological standard.
Gasoline: 120
#Aviation spirit.
Two, batching and mixing procedure
(1) technology purpose: with the desired content of this alloy, composition and auxiliary material be according to certain ratio, makes uniform compound by batching, batch mixing, airing, operation such as sieve.
(2) processing condition:
1. batching system:
| Batch of material amount (kilogram) | The hard phase | Matrix content 88% | Gasoline | Oleic acid | |||
| WC+W | Cu | Ni | Cr | Sn | |||
| 12% | 97.6% | 1% | 0.2% | 1.2% | The 30ml/ kilogram | The 6ml/ kilogram | |
| 20 | 2.4 | 17.2 | 0.42 | 600 | 120 | ||
2. batch mixing system:
| Equipment | Charge amount (kilogram) | Ratio of grinding media to material | The alloy ball diameter | Mixing time |
| φ 300 * 400mm ball mill | 20 | 1∶1 | φ5～φ10 | 4 hours |
3. airing: technology purpose: vapor away remaining gasoline, help compression moulding.
Processing requirement: material is spread in container, and be placed on indoor 6～8 hours of dry cleansing.
4. sieve: the technology purpose: remove the inclusion that may fall into material, and make powder loose.
Processing condition: φ 500mm vibratory screening apparatus.-120 orders.
5. assay: the compound for preparing should close batch, and sampling analysis when meeting the composition requirement, can change next procedure over to.
Three, compression molding
(1) technology purpose: the compound that weighs up is contained in the pressing mold, presses the technical requirements of goods, be pressed into the goods of definite shape size.
(2) processing condition:
1. equipment: 63T, 100T oil press.
2. the stampings substance calculates:
G＝V·C×5‰
In the formula: G-stampings substance (g).
Sintering finished volume (the cm of V-
3).
Sintering finished density (the g/cm of C-
3).
3. the density of stampings: 7～7.7g/cm
3
4. pressing pressure: 3.5～4T/cm
2
5. compressed mixture must airing, avoids remaining gasoline.
(3) technical qualification: stampings do not allow layering, crackle, seriously fall phenomenons such as limit, arrisdefect, otherwise must pulverize weight.
(4) code of practice:
1. the operator must be familiar with oil press performance and safety regulation for operations.
2. choose pressing mold as requested, and with the pressing mold scrub.
3. when suppressing, powder must shakeout, and is even to guarantee casting die density.Upper and lower drift must be ajusted, put well, avoids mold damage.
4. should often die cavity be cleaned out before the charging, prevent powders viscosity mould, and speed is wanted soon when suitably pressurize, the demoulding, and will once finish, the centre does not stop.
5. when stampings are defective, analyze at any time, research and solve, a small amount of unacceptable product can smash weight, and amount needs its surface and oil contaminant is cleaned up for a long time, refaces in the ball mill of packing into.
6. qualified stampings are answered pallet number, fill in the die mould record.
7. after having pressed,, properly be placed on the die frame mold cleaning clean (if time spent not, should spread oil) for a long time.
8. do security civilization production well, keep die mould chamber and various plant and instrument, the sanitation and hygiene of instrument, and the maintaining work of attention oil press.
Four, the sintering of stampings
(1) technology purpose: sintering is one of critical process of powder metallurgy.Stampings make the porous powder compact change into the densification product with certain tissue and performance behind sinter.
(2) processing condition:
The sintering process standard
| Equipment | Sintering temperature | Push away boat speed | Filler | Temperature control method | Remarks |
| 130 * 200 * 3800mm horseshoe type, two band molybdenum wire furnaces | 1020±10℃ | 2 mm/min (machinery pushes away boat) | AI lO 3 | 1. optical pyrometer constant temperature 2. thermopairs and potentiometer temperature control |
(3) technical qualification
1. qualified products appearance corner angle are clear, and phenomenons such as hole, crackle, bubbling, underburnt, burning must not be arranged.
2. goods proportion: D 〉=9.2g/cm
3
3. proportion calculates:
D= (G)/(G-(G
1-G
2)) g/cm
3
In the formula: the aerial weight of G-goods (g).
G
1-goods and the cat net weight (g) in water.
G
2The weight (g) of-cat net in water.
(4) code of practice:
1. the operator must strictly observe the safety regulation for operations of sintering oven and electrolyzer.Be familiar with sintering process, will carry out sufficient preparation work before each blow-on.
2. in process of production, each blow-on must be burnt section examination temperature through at least two examinations, tries warm according to the form below dress boat.
Annotate: dress aluminum oxide powder in the empty boat.
3. must strict control sintering temperature, often note the variation of galvanometer cursor and stove electrical parameter (electric current, voltage), go out boat at every turn after, use the optical pyrometer thermometric, and carry out record.
4. every boat product amounts, the dress boat position unanimity of will trying one's best is so that temperature control.
5. will often take a sample test proportion through the agglomerating goods, find should detect by heavily taking out regulation after defective, the underburnt goods will be deposited separately, handle in order to returning to burn.
6. before the blowing out, goods in the stove all be taken out, when treating that temperature is reduced to 800 ℃ in the stove, can stop hydrogen, and closed furnace door.
7. the watchstander should conscientiously carry out the sintering record and the work of relieving, and sanitation and hygiene such as holding chamber is interior, equipment, instrument, instrument do well to carry out production strictly in line with rules and regulations.
Five, integer and cold deformation processing treatment
(1) technology purpose: by cold deformation processing, can increase the lattice defect of sosoloid, strengthen the resistance to deformation of alloy.Thereby further improve alloy substrate intensity.Shaping is in order further to improve the product surface dimensional precision.
(2) processing condition: cold deformation processing and integer can once be finished with same mould.
1. when design cold deformation die cavity, should guarantee that sintered article is not less than 10% cold deformation amount.
2. cold deformation pressure must not be less than 7T/cm
2, have enough cold deformation amounts to guarantee goods.
3. after the cold deformation, should shave burr removal, remove the product surface dirt.
Six, inspection after construction
For guaranteeing quality product, the alloy product through integer must carry out inspection after construction.Salable product should reach:
(1) hardness: HB120～140;
(2) lead than electricity: (IACS) 〉=30%;
(3) product surface is answered unfolded, burr, is fallen phenomenons such as corner;
(4) tolerance of dimension generally should less than ± below the 0.1mm;
(5) surfaceness should guarantee
More than;
(6) user can manufacture by size, specification, the accuracy requirement of providing drawing if any particular requirement.
Utilize the metallurgical electric conducting wear-resistant alloy of this invention powder formulated, through repeatedly rig-site utilization, examination and comparative evidence: 1. result of use is good, the life-span height; 2. remarkable in economical benefits, cost reduces about 70%, is a kind of ideal electric upsetter clamp material.
Claims (3)
1, a kind of mmaterial blending process is characterized in that each material composition of alloy is:
A, copper powder: copper 〉=99.7%, bismuth＜0.002%, antimony＜0.05%, arsenic＜0.05%, sulphur＜0.01%, oxygen＜0.1%, other＜0.2%, granularity :-150～-200 orders;
B, tungsten powder: oxygen＜0.025%, iron＜0.1%, oxidation residua 0.13%, loose density: 3～4 gram/cm
3, granularity :-180 orders;
C, tungsten carbide powder: total carbon: 5.9～6.1%, granularity :-150～-200 orders, loose specific weight＞4.5g/cm
3
D, other powdered alloys: Ni 〉=99.5% ,-200 orders; Cr 〉=99%-200 order
2, according to the described mmaterial blending process of claim 1, it is characterized in that:
A, batching system: hard phase wc+w is 12%, and matrix content 88%:Cu is 97.6%, and Ni is 1%, and Cr is 0.2%, and gasoline is the ml/ kilogram, and oleic acid is the 6ml/ kilogram.
B, batch mixing system
Ratio of grinding media to material is 1: 1, and the alloy ball diameter is 5～10, and mixing time is 4 hours;
3, according to claim, 1.2 described mmaterial blending process is characterized in that this material sintering temperature is 1020 ± 10 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89105307 CN1054022A (en) | 1989-06-09 | 1989-06-09 | Preparing technology for electric conducting wear-resistant alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89105307 CN1054022A (en) | 1989-06-09 | 1989-06-09 | Preparing technology for electric conducting wear-resistant alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1054022A true CN1054022A (en) | 1991-08-28 |
Family
ID=4856072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89105307 Pending CN1054022A (en) | 1989-06-09 | 1989-06-09 | Preparing technology for electric conducting wear-resistant alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1054022A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100397530C (en) * | 2001-12-04 | 2008-06-25 | 川铁矿业株式会社 | Copper alloy powder for electroconductive paste |
-
1989
- 1989-06-09 CN CN 89105307 patent/CN1054022A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100397530C (en) * | 2001-12-04 | 2008-06-25 | 川铁矿业株式会社 | Copper alloy powder for electroconductive paste |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1314504C (en) | Process of mfg. Mo alloyed targeting materials | |
| CN1185366C (en) | Electrode for discharge surface treatment and manufacturing method thereof and discharge surface treatment method and device | |
| CN107904472B (en) | A kind of manufacturing method of non-magnetic alloy | |
| CN1644279A (en) | Preparation of warm pressed diffusing particle reinforced iron-based powder metallized composite materials | |
| CN101048249A (en) | High-density milling briquetting | |
| CN1029715C (en) | Electric brush making method used in high-speed motor | |
| CN101041875A (en) | High-strength high-ductility thermostable ceramet material | |
| CN1900332A (en) | Method for preparing copper base composite material by chemical precipitation method to obtain composite powder | |
| CN1119460A (en) | Semi-solid processed magnesium-beryllium alloys | |
| CN109136713A (en) | A method of preparing high-intensity and high-tenacity WC-Co hard alloy | |
| CN1942601A (en) | Copper-based alloys and their use for infiltration of powder metal parts | |
| CN108772558A (en) | A kind of compound tungsten crucible of multielement rare earth and its preparation method and application | |
| CN109402432B (en) | Preparation method of nuclear grade zirconium alloy return material cast ingot | |
| CN106392085A (en) | Ball grinding-diameter shrinkage reciprocating extruding method for circular curing of waste titanium chips | |
| CN1054022A (en) | Preparing technology for electric conducting wear-resistant alloy | |
| CN102029298B (en) | Al2O3/TiC ceramic drawing die and manufacturing method thereof | |
| CN106493372A (en) | The ball milling bending channel extruding curing of the discarded chip circular treatment of pure titanium | |
| CN106508058B (en) | Cobalt adjusts the preparation technology of cobalt pellet in rod assembly | |
| KR102001397B1 (en) | Manufacturing Method of Aluminum-Silicon Carbide Using By-product of Cutting Process | |
| CN1644727A (en) | Copper-tungsten-carbon-titanium-rare earth alloy material and production thereof | |
| CN102817848A (en) | Sliding plate of rotary compressor, and manufacturing method thereof | |
| CN109487103A (en) | A kind of preparation method of tungsten tantalum rhenium alloys with high hardness | |
| CN1705534A (en) | Iron-based powder composition including a silane lubricant | |
| CN108480644A (en) | A kind of full-automatic production equipment special and production method of powder metallurgical helical gear | |
| CN116081613A (en) | Preparation method of high-strength fine-particle isostatic graphite material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |