CN101486100B - Method for producing car engine timing belt wheel with signal block - Google Patents
Method for producing car engine timing belt wheel with signal block Download PDFInfo
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- CN101486100B CN101486100B CN2008100591970A CN200810059197A CN101486100B CN 101486100 B CN101486100 B CN 101486100B CN 2008100591970 A CN2008100591970 A CN 2008100591970A CN 200810059197 A CN200810059197 A CN 200810059197A CN 101486100 B CN101486100 B CN 101486100B
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Abstract
The invention relates to a method for manufacturing an automobile engine timing pulley provided with a signal block, which is characterized by comprising the following steps in turn: firstly, adopting a powder metallurgic method to form a pulley matrix, and forming a groove for accommodating the signal block in a corresponding position of the pulley matrix; and taking the signal block which is provided with steps and an accommodating hole which are matched with the groove; secondly, pressing solder into the accommodating hole, and placing the steps of the signal block into the groove of the pulley matrix; thirdly, placing a pulley which is assembled with the signal block into a sintering furnace for sintering, wherein a layer of brazing solder is arranged between the signal block and the timing pulley matrix; and fourthly, taking out a product for steam treatment or reshaping after sintering is over. Compared with the prior art, the method has the advantages of high positioning precision and large connecting strength.
Description
Technical field
The present invention relates to a kind of automobile engine timing belt pulley manufacture method with block.
Background technology
Timing belt pulley has the part of a plurality of steps, and contour structures is comparatively complicated, generally needs machined, and manufacturing cost is higher like this, so timing belt pulley is generally used powder metallurgical technique production at present, and can be with reference to CN1704190A.The engine timing belt wheel generally is equipped with block on it, be used for signals collecting and transmission, to the strict demand that has of the positional precision of block and intensity, promptly to guarantee to arrive correct position in the correct time, guarantee again when engine operation, can not to damage and come off.
Existing block is installed on the timing belt pulley, and manufacturing process mainly contains following three kinds:
The first, the CNC press is shaped: move the powder drift for block design up and down each one specially with state-of-the-art CNC press, block is partly controlled specially.For guaranteeing that powder moves, upper and lower dashing must drift of corresponding increase, independently finishes the powder that moves of block, because the shape of timing belt pulley own is very complicated, has needed to dash under three, dash under so just needing four, wherein three will activity.This just needs four the CNC press that dash (wherein three activities) down that have of international most advanced level to be shaped, and mould structure is very complicated like this, and die manufacturing cost significantly promotes, and drift fractures easily, and product is lacked competitiveness.
The second, if do not design drift separately, then the close non-normal manner of the pressed compact of block is low, can not be shaped or the intensity of block is too low can't satisfy instructions for use.Higher and edge can not be gradient because of the block height, so can not use single upper punch manufacturing.Even increase gradient with single upper punch manufacturing, the density of block is also very low, can't reach requirement of strength.
The 3rd, block and belt wheel are formed separately, and sintering welds behind the sintering more respectively.The welding difficulty of iron-based powder metallurgy parts is bigger.This part contains 15% hole, and carbon content is greater than 0.5%, so bad, very unstable during the weldability fashion, occurs the block dropping situations in actual production process, and this can directly cause engine to damage.As adopting the technology of spot welding, other supplier has appeared at the phenomenon that block comes off in the engine operation.
Therefore by independent shaping, sintering, the technology of welding again is difficult to satisfy instructions for use.
Summary of the invention
Technical problem to be solved by this invention is that a kind of precision height, big, the easy automobile engine timing belt pulley manufacture method made from block that generates of intensity are provided at above-mentioned prior art present situation.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of automobile engine timing belt pulley manufacture method with block is characterized in that in turn including the following steps:
1. get powder metallurgy process moulding belt wheel matrix, form a groove that is used for ccontaining block on this corresponding position of belt wheel matrix; Get block, this block has step and the containing hole that is complementary with groove;
2. scolder is pressed in the containing hole, the step of block is put in the groove of belt wheel matrix;
3. the above-mentioned belt wheel that has assembled block is put into the sintering furnace sintering, solder fusing, wherein a part is infiltrated the belt wheel matrix, and another part infiltrates block, forms one deck scolder between block and timing belt pulley matrix;
4. sintering finishes back taking-up product and carries out steam treatment or shaping.
As preferably, the 1. described depth of groove of step is 0.2～2mm, and step is after block puts into the timing belt pulley groove described in 2., and the distance that step exposes groove is 0.005～2mm.
As preferably, it is 850～1120 ℃ Co-based alloy powder or 850～1120 ℃ solder paste that the scolder of step described in 2. adopts fusing point.
As preferably, step 3. in the actual conditions of sintering be: sintering temperature is 1050～1200 ℃, and sintering atmosphere is heat absorptivity atmosphere or nitrogen-based atmosphere, and sintering time was greater than 20 minutes, and sintering furnace is meshbeltfurnace or push rod furnace or bell jar stove.
Compared with prior art, the invention has the advantages that: adopt powder metallurgy sintered method for welding that block and timing belt pulley are realized being provided with, reached the high positioning accuracy and the big requirement of strength that is connected in block position; Simple and the easy operating of whole welding process.
Description of drawings
Fig. 1 is the structural representation of timing belt pulley.
Fig. 2 is the cutaway view of Fig. 1 along the A-A direction.
Fig. 3 is the block structural representation.
Fig. 4 is the left view of Fig. 3.
Fig. 5 schemes for scolder is shaped.
Fig. 6 is provided with structural representation for block after the soldering and belt wheel matrix.
Fig. 7, Fig. 8 are the microphoto of soldered seam in the present embodiment.
The specific embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
Embodiment: referring to figs. 1 to shown in Figure 6, the automobile engine timing belt pulley manufacture method with block in the present embodiment in turn includes the following steps:
1. get powder metallurgy process moulding belt wheel matrix 1, form a groove 11 that is used for ccontaining block 2 on this belt wheel matrix 1 corresponding position, groove 11 degree of depth are 0.2～2mm; Get block 2, this block 2 has step 22 and the containing hole 21 that is complementary with groove 11;
2. scolder is pressed in the containing hole 21, can not fall down as standard when placing down, and guarantee that scolder must not be higher than the plane that block contacts with the belt wheel matrix, the step 22 of block is put in the groove 11 of belt wheel matrix, and the step 22 that guarantees block does not fall into groove 11 fully, after block 2 was put into timing belt pulley groove 11, the distance that step 22 exposes groove 11 was 0.005～2mm;
3. the above-mentioned belt wheel that has assembled block is put into the sintering furnace sintering, sintering temperature is 1050～1200 ℃, sintering atmosphere is normal heat absorptivity atmosphere or nitrogen-based atmosphere, sintering time was greater than 20 minutes, and sintering furnace is meshbeltfurnace or push rod furnace or bell jar stove, solder fusing, wherein a part is infiltrated belt wheel matrix 1, another part infiltrates block 2, forms one deck scolder between block 2 and belt wheel matrix 2, and the thickness of this scolder is relevant with the gap of belt wheel matrix 1 and block 2;
4. sintering finishes back taking-up product and carries out steam treatment or shaping.
Containing hole has 1～6 in the present embodiment, and the shape of containing hole can be for square, and scolder is the strip (with reference to shown in Figure 5) of two ends circular arc, and containing hole also can be circular or other arbitrary shapes, and containing hole can be through hole or blind hole,
Scolder employing fusing point is 850～1120 ℃ Co-based alloy powder or a solder paste.If scolder uses solder paste, then do not need preformed filler metal, directly solder paste is clamp-oned in the hole of block among Fig. 3 and got final product.The present invention uses the powder of the SINTER BRAZE 90 of the ANCORBRAZE 72 of U.S. HOEGANAES COMPANGY and Sweden.ANCORBRAZE 72 chemical composition and performance are as follows:
| Ni | Cu | Mn | B | Si | Fe | Flow velocity | Apparent density |
| 41.2％ | 39.1％ | 15.4％ | 1.3％ | 1.9％ | All the other | ＜10S/50g | 2.14g/cm3 |
According to the different requirements of weld strength, can use copper base, silver-base solder, but require melting range than broad, should be greater than more than 30 ℃.Best is nickel-based solder.Nickel is alloying element common in the iron-based powder metallurgy parts, and the intensity of weld seam is the highest, can satisfy the instructions for use of auto parts high reliability fully.
With reference to figure 7 and shown in Figure 8, block and belt wheel matrix bond are fine, and scolder has penetrated in belt wheel matrix and the block, has reached designing requirement fully.
Claims (4)
1. automobile engine timing belt pulley manufacture method with block is characterized in that in turn including the following steps:
1. get powder metallurgy process moulding belt wheel matrix, form a groove that is used for ccontaining block on this corresponding position of belt wheel matrix; Get block, this block has step and the containing hole that is complementary with groove;
2. scolder is pressed in the containing hole, the step of block is put in the groove of belt wheel matrix;
3. the above-mentioned belt wheel that has assembled block is put into the sintering furnace sintering, solder fusing, wherein a part is infiltrated the belt wheel matrix, and another part infiltrates block, forms one deck scolder between block and timing belt pulley matrix;
4. sintering finishes back taking-up product and carries out steam treatment or shaping.
2. manufacture method according to claim 1 is characterized in that the 1. described depth of groove of step is 0.2～2mm, and step is after block puts into the timing belt pulley groove described in 2., and the distance that step exposes groove is 0.005～2mm.
3. manufacture method according to claim 1 is characterized in that it is 850～1120 ℃ Co-based alloy powder or 850～1120 ℃ solder paste that the scolder described in step 2. adopts fusing point.
4. manufacture method according to claim 1, it is characterized in that the actual conditions of sintering was during step 3.: sintering temperature is 1050～1200 ℃, sintering atmosphere is heat absorptivity atmosphere or nitrogen-based atmosphere, and sintering time was greater than 20 minutes, and sintering furnace is meshbeltfurnace or push rod furnace or bell jar stove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100591970A CN101486100B (en) | 2008-01-17 | 2008-01-17 | Method for producing car engine timing belt wheel with signal block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100591970A CN101486100B (en) | 2008-01-17 | 2008-01-17 | Method for producing car engine timing belt wheel with signal block |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101486100A CN101486100A (en) | 2009-07-22 |
| CN101486100B true CN101486100B (en) | 2010-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100591970A Active CN101486100B (en) | 2008-01-17 | 2008-01-17 | Method for producing car engine timing belt wheel with signal block |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105665711A (en) * | 2016-01-29 | 2016-06-15 | 东睦新材料集团股份有限公司 | Preparation method for powder metallurgy rotating hub gear |
| CN106704550B (en) * | 2017-02-13 | 2023-08-22 | 马鞍山市华东粉末冶金厂 | Primary driving belt wheel for light high branch saw and manufacturing die and method thereof |
| CN108127290B (en) * | 2017-12-22 | 2021-07-30 | 苏州铜宝锐新材料有限公司 | Brazing material for welding porous material and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4317388A (en) * | 1979-07-06 | 1982-03-02 | Dana Corporation | Gear wheel with vibration damping rings |
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2008
- 2008-01-17 CN CN2008100591970A patent/CN101486100B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4317388A (en) * | 1979-07-06 | 1982-03-02 | Dana Corporation | Gear wheel with vibration damping rings |
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| CN101486100A (en) | 2009-07-22 |
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Application publication date: 20090722 Assignee: NBTM (TIANJIN) POWDER METALLURGY CO., LTD. Assignor: NBTM New Materials Group Co., Ltd. Contract record no.: 2012330000483 Denomination of invention: Method for producing car engine timing belt wheel with signal block Granted publication date: 20100908 License type: Exclusive License Record date: 20120831 |