CN102537361A - Sealing ring for water circulation sealing box of car and preparation method of sealing ring - Google Patents
Sealing ring for water circulation sealing box of car and preparation method of sealing ring Download PDFInfo
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- CN102537361A CN102537361A CN2010105768480A CN201010576848A CN102537361A CN 102537361 A CN102537361 A CN 102537361A CN 2010105768480 A CN2010105768480 A CN 2010105768480A CN 201010576848 A CN201010576848 A CN 201010576848A CN 102537361 A CN102537361 A CN 102537361A
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Abstract
The invention provides a sealing ring for a water circulation sealing box of a car. A hollow shaft is arranged in a sealing box and each set of the sealing ring comprises a left sealing ring and a right sealing ring which is matched with the left sealing ring in use; the left sealing ring and the right sealing ring are respectively provided with transparent ring holes; the left sealing ring and the right sealing ring are sleeved on the hollow shaft in a clearance fit manner through respective ring holes, and are located in the sealing box; a right side surface of the left sealing ring and a left side surface of the right sealing ring are smooth surfaces and are mutually and tightly contacted; meanwhile, two inner positioning grooves are symmetrically arranged at the left side of the ring hole of the left sealing ring along a longitudinal axis; four outer positioning grooves are uniformly and symmetrically distributed on the outer surface of the right sealing ring along the longitudinal axis; the left sealing ring and the right sealing ring are made of a ceramic material with the weight content of aluminum oxide of not less than 95%, wherein the volume density is more than or equal to 3.7 g/cm<3>, the bending strength is more than or equal to 250 MPa, the coefficient of thermal expansion at a temperature of 20-500 DEG C is less than or equal to 7.2*10 to the 6th power/DEG C, the coefficient of heat conductivity is less than or equal to 17 CW/m*k, the hardness is more than or equal to 85 Hp*A, the puncture strength is more than or equal to 18 kv/mm, and the heat resistance is more than or equal to 1500 DEG C; and meanwhile, the RZ roughness of the right side surface of the left sealing ring and the right sealing ring is less than or equal to 85.
Description
Technical field
The present invention relates to a kind of seal ring that is used for automobile water cycle sealing case, seal.The invention still further relates to the preparation method of sealing ring.
Background technique
The seal ring that now generally is used for the sealing case of automobile water cycle; General sealing box is provided with shell; Be provided with the hollow shaft of a hollow in the shell; Be set with at least one cover seal ring on the hollow shaft; Every cover seal ring includes a left seal ring and a right seal ring that is used with left seal ring, and the spring assembly extruding that this left and right seal ring also is provided with in the housing realizes that mutual close contact plays seal action, and every cover seal ring also prevents rotation through the positioning device that only revolves that is arranged on housing, quill shaft and the seal ring.Vitals wherein---seal ring, determining the working life of whole sealing case its working life, general, it adopts metal to make, and the employing plastic production is also arranged.Adopt in the metal making, seal ring intensity is higher, but can't bear acid, the caustic corrosion in the environment of living in, causes the life-span short, yielding.Adopt in the plastic production, can tolerate acid, caustic corrosion, but can not tolerate the high temperature of environment of living in, intensity also can't be satisfied the demand lastingly.Both of these case all causes seal ring shorter working life, thereby has influence on the working life of whole sealing case.
When being the material seal ring with the metal, the method for taking generally is machining, be aided with process of thermal treatment.When being the material seal ring, generally take the technology of injection moulding processing with plastics.
Summary of the invention
In order to overcome above defective; Technical problem to be solved by this invention is: a kind of seal ring and manufacturing process thereof that is used for the sealing case of automobile water cycle is provided; It not only can play the better seal effect, even can be better with respect to the sealing effect of metallic packing ring and plastic sealing ring, and can acid resistant alkali, high temperature resistant; Not yielding, thus long long service life had.
In order to solve above technical problem; The technological scheme that the present invention adopted is: a kind of seal ring that is used for automobile water cycle sealing case; Wherein, the sealing case set inside has the hollow shaft of a hollow, and every cover seal ring comprises a left seal ring and a right seal ring that is used with left seal ring; Left and right seal ring is provided with penetrating annular distance, and left and right seal ring is being sleeved on the hollow shaft and being positioned at sealing case of the annular distance Spielpassung through separately all; The right flank of left side seal ring and the left surface of right seal ring are smooth surface, and mutual close contact; Simultaneously, the longitudinal axis of the left seal ring in edge on the left side edge of the annular distance of left seal ring symmetry be provided with two interior locating slots, the outer surface of right seal ring longitudinally axis is distributed with four outside fix grooves symmetrically and evenly; It is characterized in that: described left and right seal ring is not less than 95% ceramic material by the weight content of aluminium oxide, and its volume density is>=3.7g/cm
3, resistance to flexure is>=250MPa, and 20 ℃～500 ℃ thermal expansion coefficient are≤7.2 * 10-6/ ℃, and thermal conductivity is≤17CW/mk that hardness is>=85HpA that breakdown strength is>=18kv/mm that refractoriness is>=1500 ℃; Simultaneously, RZ roughness≤85 of the right flank of described left seal ring and right seal ring.
Make the preparation method of the described seal ring of claim 1, being not less than 99.5% aluminium oxide with weight content is major ingredient, mixes the back as auxiliary material with silica, white clay, calcium carbonate, zirconium oxide; Get major ingredient 96% in weight portion; Silica 0.2～1%, white clay 0.2～1%, zirconium oxide 0.2～1%; The calcium carbonate of enough magnitude of recruitment umbers, and may further comprise the steps successively:
1) powder process: with major ingredient and auxiliary material dry respectively with ball milling after, mix and stir obtaining mixture;
2) system gatch: the resulting mixture of step 1) is added paraffin, stir into pasty state, be made as gatch;
The gatch heating of 3) moulding: with step 2) processing also stirs, and is filled into mould then, and hot-forming is formed body;
4) low temperature de-waxing and high temperature sintering: high temperature sintering was made as semi-finished product after the formed body that step 3) is processed carried out de-waxing;
5) polishing: the semi-finished product that step 4) is processed are roughly ground, polished;
6) clean.
Optimize, the described oven dry of step 1) is for to carry out in dryer, and setting bake out temperature is 130～180 ℃, 6～9 hours time of required oven dry; Described ball milling is for to carry out in pebble mill, and set time is at least 20 hours, and the meso-position radius of the coccoid that obtains until random observation is≤3 microns.
Step 2) weight ratio of the coccoid that obtains of described paraffin that adds and step 1) is 0.1:1～0.2:1.
Step 2) described gatch is heated to be in 80～120 ℃ environment, places 8～12 hours; Described hot-forming temperature required be 50～80 ℃, pressure 0.35～0.55Mp.
The temperature required of the described low temperature de-waxing of step 4) is 1000～1300 ℃; The de-waxing time is 24～72 hours; High temperature sintering is 550～600 ℃ of initial temperatures; Final temperature is to pass through with throw line speed 0.3～0.7m/h in 1500～1800 ℃ the baking kiln that progressively heats up, and is 24～36 hours through needed time.
The used cleaning solution of the described cleaning of step 6) is that oxalic acid content is 50%～70% oxalic acid solution.
Adopt after the above technological scheme, especially adopt preparation process of the present invention to obtain seal ring after, the stupalith that the sealing ring has has overcome the defective of original metallic packing ring and plastic sealing ring; Not only sealing effect is better, and can stand the corrosion of acid, alkali in the environment of living in, simultaneously; Durable wear; Intensity is higher, and be greatly improved working life, thereby has improved the working life of sealing case.And big of described preparation process's device therefor is a common equipment, and operability is stronger, and the quality of product that obtains is higher.
Description of drawings
Fig. 1 is the positive view of seal ring of the present invention when being installed on the hollow shaft.
Fig. 2 is the positive view of left seal ring of the present invention.
Fig. 3 is the left view of left seal ring shown in Figure 2.
Fig. 4 is the right elevation of left seal ring shown in Figure 2.
Fig. 5 is the positive view of right seal ring of the present invention.
Fig. 6 is the left view of right seal ring shown in Figure 5.
Fig. 7 is the right elevation of right seal ring shown in Figure 5.
Among the figure: 1, left seal ring, 12, interior locating slot; 2, right seal ring, 22, the outside fix groove; 3, hollow shaft; 4, annular distance.
Embodiment
Below in conjunction with accompanying drawing, invention done specifying.
As shown in Figure 1: the hollow shaft 3 of inner hollow is arranged at sealing case (not shown on the figure) inside, being sleeved on the quill shaft of left seal ring 1 and right seal ring 2 close contact.Like Fig. 2, Fig. 3, shown in Figure 4: left seal ring 1 is provided with annular distance 4, its size and sectional shape and hollow shaft 3 Spielpassung.The left side edge of this annular distance 4 and the left surface of left seal ring 1 position of joining is provided with symmetrically arranged two interior locating slots 12 along the medial axis of seal ring; Certainly, also be provided with on the unshowned sealing case on the figure be mated prevent the positioning device of seal ring rotation such as positioning block etc.The right side of this left side seal ring 1 is a smooth surface, its RZ roughness≤85.Like Fig. 5, Fig. 6, shown in Figure 7: right seal ring 2 also is provided with annular distance 4, its size and sectional shape and hollow shaft 3 Spielpassung.The outer surface of right seal ring 2 is provided with four outside fix grooves 22 along the longitudinal axis symmetry of right seal ring 2 and equally distributed; Certainly; Also be provided with on the unshowned sealing case on the figure be mated prevent the positioning device of seal ring rotation such as positioning block etc.; Though or other be not set directly on the sealing case, can indirect realization prevent the positioning device of seal ring rotation.The left side of this right side seal ring 2 is a smooth surface, its RZ roughness≤85.As shown in Figure 1: the close contact of the left surface of left seal ring 1 and right seal ring 2 right flank and the right seal ring 2 through left seal ring 1 reaches the effect of close contact.
Below in conjunction with embodiment preparation process of the present invention is described:
Embodiment 1
1) gets 96 parts in 99.5% aluminium oxide at first by weight as major ingredient; 0.2 part of silica, 0.2 part of white clay, 0.2 part of zirconium oxide, 3.4 parts of mixing of calcium carbonate are as auxiliary material.
2) respectively major ingredient and auxiliary material are dried under 130 ℃ condition, then oven dry body separately is respectively charged into pebble mill, ball milling 20 hours; The meso-position radius of stochastic analysis powdered materials separately is≤3 microns respectively.Certainly, if do not reach granularity requirements, can 1～2 hour proper extension ball milling time obtain requirement until the powdered materials granularity of analyzing immediately.After granularity all reached requirement separately, powdered materials fully mixed separately, was stirred to evenly.
3) add the paraffin of 10 weight portions in proportion, process pasty state after the stirring, the static placement is made as gatch.Gatch was heated 8 hours in 80 ℃ environment, and stir, be filled into mould then, hot-forming in 50 ℃, 0.35Mpa.
4) with hot-press forming body de-waxing under 1000 ℃ condition; The de-waxing time is 24 hours, and high temperature sintering is 550 ℃ of initial temperatures, and final temperature is to pass through with throw line speed 0.3m/h in 1500 ℃ the baking kiln that progressively heats up; Through needed time is 24 hours, and final sintering is processed semi-finished product.
5) with semi-finished product machinery corase grind and polishing, it is 85 that the left surface of the right flank of particularly left seal ring 1 and right seal ring 2 is polished to the RZ roughness.
6) put into 50% oxalic acid solution and clean, dry and obtain finished product.
Embodiment 2
Get 96 parts in 99.8% aluminium oxide at first by weight as major ingredient; 0.2 part of silica, 0.2 part of white clay, 0.2 part of zirconium oxide, 3.4 parts of mixing of calcium carbonate are as auxiliary material.
Other steps are identical with embodiment 1 with parameter.
Embodiment 3
Get 96 parts in 99.5% aluminium oxide at first by weight as major ingredient; Silica 1 part, 1 part of white clay, 1 part of zirconium oxide, 1 part of mixing of calcium carbonate is as auxiliary material.
Other steps are identical with embodiment 1 with parameter.
Embodiment 4
Get 96 parts in 99.8% aluminium oxide at first by weight as major ingredient; 0.55 part of silica, 0.7 part of % of white clay, 0.95 part of zirconium oxide, 1.8 parts of mixing of calcium carbonate are as auxiliary material.
Other steps are identical with embodiment 1 with parameter.
Embodiment 5
1) gets 96 parts in 99.5% aluminium oxide at first by weight as major ingredient; 0.2 part of silica, 0.2 part of white clay, 0.2 part of zirconium oxide, 3.4 parts of mixing of calcium carbonate are as auxiliary material.
2) respectively major ingredient and auxiliary material are dried under 180 ℃ condition, then oven dry body separately is respectively charged into pebble mill, ball milling 9 hours; The meso-position radius of stochastic analysis powdered materials separately is≤3 microns respectively.Certainly, if do not reach granularity requirements, can 1～2 hour proper extension ball milling time obtain requirement until the powdered materials granularity of analyzing immediately.After granularity all reached requirement separately, powdered materials fully mixed separately, was stirred to evenly.
3) add the paraffin of 20 weight portions in proportion, process pasty state after the stirring, the static placement is made as gatch.Gatch was heated 12 hours in 120 ℃ environment, and stir, be filled into mould then, hot-forming in 80 ℃, 0.55Mpa.
4) with hot-press forming body de-waxing under 1300 ℃ condition; The de-waxing time is 72 hours, and high temperature sintering is 600 ℃ of initial temperatures, and final temperature is to pass through with throw line speed 0.7m/h in 1800 ℃ the baking kiln that progressively heats up; Through needed time is 36 hours, and final sintering is processed semi-finished product.
5) with semi-finished product machinery corase grind and polishing, it is 85 that the left surface of the right flank of particularly left seal ring 1 and right seal ring 2 is polished to the RZ roughness.
6) put into 70% oxalic acid solution and clean, dry and obtain finished product.
Embodiment 6
1) gets 96 parts in 99.8% aluminium oxide at first by weight as major ingredient; 0.2 part of silica, 0.2 part of white clay, 0.2 part of zirconium oxide, 3.4 parts of mixing of calcium carbonate are as auxiliary material.
2) respectively major ingredient and auxiliary material are dried under 180 ℃ condition, then oven dry body separately is respectively charged into pebble mill, ball milling 24 hours; The meso-position radius of stochastic analysis powdered materials separately is≤3 microns respectively.Certainly, if do not reach granularity requirements, can 1～2 hour proper extension ball milling time obtain requirement until the powdered materials granularity of analyzing immediately.After granularity all reached requirement separately, powdered materials fully mixed separately, was stirred to evenly.
3) add the paraffin of 20 weight portions in proportion, process pasty state after the stirring, the static placement is made as gatch.Gatch was heated 10 hours in 100 ℃ environment, and stir, be filled into mould then, hot-forming in 60 ℃, 0.45Mpa.
4) with hot-press forming body de-waxing under 1100 ℃ condition; The de-waxing time is 50 hours, and high temperature sintering is 580 ℃ of initial temperatures, and final temperature is to pass through with throw line speed 0.5m/h in 1600 ℃ the baking kiln that progressively heats up; Through needed time is 28 hours, and final sintering is processed semi-finished product.
5) with semi-finished product machinery corase grind and polishing, it is 85 that the left surface of the right flank of particularly left seal ring 1 and right seal ring 2 is polished to the RZ roughness.
6) put into 60% oxalic acid solution and clean, dry and obtain finished product.
Embodiment 7
1) gets 96 parts in 99.8% aluminium oxide at first by weight as major ingredient; 0.55 part of silica, 0.7 part of white clay, 0.95 part of zirconium oxide, 1.8 parts of mixing of calcium carbonate are as auxiliary material.
2) respectively major ingredient and auxiliary material are dried under 165 ℃ condition, then oven dry body separately is respectively charged into pebble mill, ball milling 22 hours; The meso-position radius of stochastic analysis powdered materials separately is≤3 microns respectively.Certainly, if do not reach granularity requirements, can 1～2 hour proper extension ball milling time obtain requirement until the powdered materials granularity of analyzing immediately.After granularity all reached requirement separately, powdered materials fully mixed separately, was stirred to evenly.
3) add the paraffin of 130 weight portions in proportion, process pasty state after the stirring, the static placement is made as gatch.Gatch was heated 10 hours in 100 ℃ environment, and stir, be filled into mould then, hot-forming in 60 ℃, 0.45Mpa.
4) with hot-press forming body de-waxing under 1200 ℃ condition; The de-waxing time is 68 hours, and high temperature sintering is 580 ℃ of initial temperatures, and final temperature is to pass through with throw line speed 0.5m/h in 1700 ℃ the baking kiln that progressively heats up; Through needed time is 28 hours, and final sintering is processed semi-finished product.
5) with semi-finished product machinery corase grind and polishing, it is 85 that the left surface of the right flank of particularly left seal ring 1 and right seal ring 2 is polished to the RZ roughness.
6) put into 60% oxalic acid solution and clean, dry and obtain finished product.
Wherein, embodiment 7 parameter is moderate.The seal ring intensity that obtains is high, resistance to acids and bases is good, suitable polishing processing.
By the left and right seal ring that said method makes, its volume density is>=3.7g/cm
3, resistance to flexure is>=250MPa, and 20 ℃～500 ℃ thermal expansion coefficient is≤7.2 * 10-6/ ℃, and thermal conductivity is≤17CW/mk that hardness is>=85HpA that breakdown strength is>=18kv/mm that refractoriness is>=1500 ℃; Simultaneously, RZ roughness≤85 of the right flank of left seal ring and right seal ring.
Claims (7)
1. seal ring that is used for automobile water cycle sealing case; Wherein, the sealing case set inside has the hollow shaft (3) of a hollow, and every cover seal ring comprises a left seal ring (1) and a right seal ring (2) that is used with left seal ring (1); Left and right seal ring (1; 2) be provided with penetrating annular distance (4) respectively, left and right seal ring (1,2) all hollow shaft (3) that is sleeved on of annular distance (4) Spielpassung through is separately gone up and is positioned at sealing case; The right flank of left side seal ring (1) and the left surface of right seal ring (2) are smooth surface, both mutual close contact; Simultaneously, the left side of left seal ring annular distance (4) is symmetrically arranged with two interior locating slots (12) along its longitudinal axis, and the outer surface of right seal ring (2) longitudinally axis is distributed with four outside fix grooves (22) symmetrically and evenly; It is characterized in that: described left and right seal ring (1,2) is not less than 95% ceramic material by the weight content of aluminium oxide, and its volume density is>=3.7g/cm
3, resistance to flexure is>=250MPa, and 20 ℃～500 ℃ thermal expansion coefficient is≤7.2 * 10-6/ ℃, and thermal conductivity is≤17CW/mk that hardness is>=85HpA that breakdown strength is>=18kv/mm that refractoriness is>=1500 ℃; Simultaneously, RZ roughness≤85 of the right flank of described left seal ring (1) and right seal ring (2).
2. preparation method who makes the described seal ring of claim 1, being not less than 99.5% aluminium oxide with weight content is major ingredient, mixes the back as auxiliary material with silica, white clay, calcium carbonate, zirconium oxide; Get major ingredient 96% in weight portion; Silica 0.2～1%, white clay 0.2～1%, zirconium oxide 0.2～1%; The calcium carbonate of enough magnitude of recruitment umbers, and may further comprise the steps successively:
1) powder process: with major ingredient and auxiliary material dry respectively with ball milling after obtain coccoid separately, mix and stir the coccoid that obtains obtaining mixture;
2) system gatch: the resulting mixture of step 1) is added paraffin, stir into pasty state, be made as gatch;
The gatch heating of 3) moulding: with step 2) processing also stirs, and is filled into mould then, and hot-forming is formed body;
4) low temperature de-waxing and high temperature sintering: high temperature sintering was made as semi-finished product after the formed body that step 3) is processed carried out de-waxing;
5) polishing: the semi-finished product that step 4) is processed are roughly ground, polished;
6) clean.
3. the preparation method of seal ring according to claim 2, the described oven dry of step 1) is for to carry out in dryer, and setting bake out temperature is 130～180 ℃, 6～9 hours time of required oven dry; Described ball milling is for to carry out in pebble mill, and set time is at least 20 hours, and the meso-position radius of the coccoid that obtains until random observation is≤3 microns.
4. the preparation method of seal ring according to claim 2, step 2) weight ratio of the coccoid that obtains of described paraffin that adds and step 1) is 0.1:1～0.2:1.
5. the preparation method of seal ring according to claim 2, step 2) described gatch is heated to be in 80～120 ℃ environment, placed 8～12 hours; Described hot-forming temperature required be 50～80 ℃, pressure 0.35～0.55Mp.
6. the preparation method of seal ring according to claim 2; The temperature required of the described low temperature de-waxing of step 4) is 1000～1300 ℃; The de-waxing time is 24～72 hours; High temperature sintering is 550～600 ℃ of initial temperatures, and final temperature is to pass through with throw line speed 0.3～0.7m/h in 1500～1800 ℃ the baking kiln that progressively heats up, and is 24～36 hours through needed time.
7. the preparation method of seal ring according to claim 2, the used cleaning solution of the described cleaning of step 6) is that oxalic acid content is 50%～70% oxalic acid solution.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010576848.0A CN102537361B (en) | 2010-12-07 | 2010-12-07 | Sealing ring for water circulation sealing box of car and preparation method of sealing ring |
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| CN201010576848.0A CN102537361B (en) | 2010-12-07 | 2010-12-07 | Sealing ring for water circulation sealing box of car and preparation method of sealing ring |
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Cited By (4)
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| CN109812578A (en) * | 2019-02-26 | 2019-05-28 | 安徽沃尔顶密封工业有限公司 | A kind of O-ring seal and its production method preventing aging |
| CN110565507A (en) * | 2019-09-30 | 2019-12-13 | 中铁二院工程集团有限责任公司 | liquid viscous damper with impact resistance |
| CN112939579A (en) * | 2021-01-19 | 2021-06-11 | 湖南省醴陵市兆荣瓷业有限公司 | Formula and method for preparing yellow 95 ceramic with stable high-temperature color by permeating zirconium base |
| CN113061020A (en) * | 2021-02-07 | 2021-07-02 | 娄底市安地亚斯电子陶瓷有限公司 | Ceramic slurry, preparation method thereof and ceramic material |
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| CN112939579A (en) * | 2021-01-19 | 2021-06-11 | 湖南省醴陵市兆荣瓷业有限公司 | Formula and method for preparing yellow 95 ceramic with stable high-temperature color by permeating zirconium base |
| CN113061020A (en) * | 2021-02-07 | 2021-07-02 | 娄底市安地亚斯电子陶瓷有限公司 | Ceramic slurry, preparation method thereof and ceramic material |
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| Publication number | Publication date |
|---|---|
| CN102537361B (en) | 2015-05-27 |
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