CN104963951A - Sealing ring for automobile tensioning wheel bearing and preparing technology of sealing ring - Google Patents
Sealing ring for automobile tensioning wheel bearing and preparing technology of sealing ring Download PDFInfo
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- CN104963951A CN104963951A CN201510303993.4A CN201510303993A CN104963951A CN 104963951 A CN104963951 A CN 104963951A CN 201510303993 A CN201510303993 A CN 201510303993A CN 104963951 A CN104963951 A CN 104963951A
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Abstract
The invention provides a sealing ring for an automobile tensioning wheel bearing and a preparing technology of the sealing ring. The sealing ring for the automobile tensioning wheel bearing and the preparing technology of the sealing ring solve the technical problems that an existing sealing ring is poor in friction-resistance performance, consequently the sealing ring is extremely prone to abrasion, and a preparing technology of the sealing ring does not exist. The sealing ring for the automobile tensioning wheel bearing comprises a framework and a sealing ring body. The sealing ring body is fixed in the framework. A dustproof lip is arranged in the middle of the sealing ring body. The sealing ring body comprises nitrile rubber, sulphur, an anti-aging agent of mercapto benzimidazole, zinc oxide, stearic acid, calcium hydroxide, alumina powder, dibutyl phthalate, silicon dioxide and a vulcanization accelerator of di-tert-butyl peroxide. The sealing ring for the automobile tensioning wheel bearing and the preparing technology of the sealing ring have the advantages that friction resistance is achieved, and the production efficiency is high.
Description
Technical field
The invention belongs to technical field of automobile, relate to a kind of seal ring and preparation process thereof of automobile tension pulley bearing.
Background technique
Adopt traditional bearing in automobile tension pulley, because the both sides of bearing do not use seal ring, easily make the water outside bearing, vapour, dust and other impurity enter Bearing inner, after impurity enters, exacerbate the corrosion of Bearing inner.The grease of Bearing inner also easily runs off, the lubricating status of bearing is worsened, adds noise during bearing operation, serious curtailment working life of bearing.
Through retrieval, as Chinese patent literature discloses a kind of automobile tension pulley seal ring of shaft bearing [application number: 201020257497.2; Authorization Notice No.: CN 201771975U].This automobile tension pulley seal ring of shaft bearing, comprise body, this body comprises tubular central part and outer part, and central part and outer part are connected as a single entity structure, it is characterized in that, described outer part is provided with and can enters outer bearing groove and can prevent the outer lip that body rotates.
Although seal ring effectively can reduce assembling difficulty disclosed in this patent, significantly improve the yield rate of assembling, long service life, but, sealing circle crocking resistance is poor, causes it very easily to wear and tear, and does not have its preparation process, therefore, seal ring and the preparation process thereof of designing a kind of automobile tension pulley bearing are necessary.
Summary of the invention
First object of the present invention there are the problems referred to above for existing technology, and propose a kind of seal ring of automobile tension pulley bearing, sealing circle has the feature of rub resistance, good dustproof effect.
First object of the present invention realizes by following technical proposal: the seal ring of automobile tension pulley bearing, comprise skeleton and seal ring body, seal ring body is fixed in skeleton, in the middle part of seal ring body, there is dust excluder lips, it is characterized in that, seal ring body comprises nitrile butadiene rubber, sulphur, base benzimidazole dredged by age resister, zine oxide, stearic acid, calcium hydroxide, alumina powder, dibutyl phthalate, silica and vulcanizing accelerator di-tert-butyl peroxide, described each component is as follows by mass percentage: nitrile butadiene rubber accounts for 70%-80%, sulphur accounts for 10%-20%, age resister is dredged base benzimidazole and is accounted for 1%-3%, zine oxide accounts for 0.5%-0.8%, stearic acid accounts for 2%-4%, calcium hydroxide accounts for 1%-5%, alumina powder accounts for 0.2%-0.6%, dibutyl phthalate accounts for 0.1%-0.3%, silica accounts for 3%-7% and vulcanizing accelerator di-tert-butyl peroxide accounts for 1%-4%, each component sum is 100%.
In the middle part of seal ring body, there is dust excluder lips, adopt this structure, dust-proof and oil sealing effect preferably can be made it have, improve the working life of expansion tightening wheel bearing, good dustproof effect.
Described nitrile butadiene rubber accounts for 70%, sulphur accounts for 16%, age resister dredges that base benzimidazole accounts for 2%, zine oxide accounts for 0.5%, stearic acid accounts for 3%, calcium hydroxide accounts for 4%, alumina powder accounts for 0.2%, dibutyl phthalate accounts for 0.3%, silica account for 3% and vulcanizing accelerator di-tert-butyl peroxide account for 1%.
Described nitrile butadiene rubber accounts for 72%, sulphur accounts for 12%, age resister dredges that base benzimidazole accounts for 2%, zine oxide accounts for 0.5%, stearic acid accounts for 3%, calcium hydroxide accounts for 4%, alumina powder accounts for 0.2%, dibutyl phthalate accounts for 0.3%, silica account for 5% and vulcanizing accelerator di-tert-butyl peroxide account for 1%.
Described nitrile butadiene rubber accounts for 75%, sulphur accounts for 10%, age resister dredges that base benzimidazole accounts for 2%, zine oxide accounts for 0.5%, stearic acid accounts for 3%, calcium hydroxide accounts for 4%, alumina powder accounts for 0.4%, dibutyl phthalate accounts for 0.1%, silica account for 5% and vulcanizing accelerator di-tert-butyl peroxide account for 2%.
Described nitrile butadiene rubber accounts for 78%, sulphur accounts for 10%, age resister dredges that base benzimidazole accounts for 2%, zine oxide accounts for 0.5%, stearic acid accounts for 3%, calcium hydroxide accounts for 2%, alumina powder accounts for 0.2%, dibutyl phthalate accounts for 0.3%, silica account for 3% and vulcanizing accelerator di-tert-butyl peroxide account for 1%.
Described nitrile butadiene rubber accounts for 80%, sulphur accounts for 10%, age resister dredges that base benzimidazole accounts for 1%, zine oxide accounts for 0.5%, stearic acid accounts for 2%, calcium hydroxide accounts for 2%, alumina powder accounts for 0.2%, dibutyl phthalate accounts for 0.3%, silica account for 3% and vulcanizing accelerator di-tert-butyl peroxide account for 1%.
After adopting above component to fill a prescription, seal ring is due to based on nitrile butadiene rubber, add appropriate sulphur wherein again, base benzimidazole dredged by age resister, zine oxide, stearic acid, calcium hydroxide, alumina powder, dibutyl phthalate, silica and vulcanizing accelerator di-tert-butyl peroxide, component is very reasonable, seal ring can be made to have good rub resistance, and structural stability.
Second object of the present invention there are the problems referred to above for existing technology, proposes a kind of preparation process of seal ring of automobile tension pulley bearing, and this preparation process has the high feature of manufacturing efficiency.
Second object of the present invention realizes by following technical proposal: the preparation process of the seal ring of automobile tension pulley bearing, and this technique comprises the following steps: one, the making of skeleton; Adopt stainless steel material to make in circular skeleton, skeleton adopts mould one-body molded;
Two, the making of seal ring body; 1) first make nitrile butadiene rubber: after part natural rubber is cut into 2-5mm thin-pass on a mill until, add butyronitrile, mixing evenly after, make nitrile butadiene rubber;
2) then nitrile butadiene rubber is put in banbury, add sulphur successively again, base benzimidazole dredged by age resister, zine oxide, stearic acid, calcium hydroxide, alumina powder, dibutyl phthalate, silica and vulcanizing accelerator di-tert-butyl peroxide, mixing 11 ~ 15 minutes, mention upper top-bolt sulphur is added, binder removal after mixing 65 ~ 96 seconds again, bottom sheet, cooling after mill turns refining; This step Mooney viscosity ML (1+4) 120 DEG C controls 80 ± 5;
3) by step 2) cooled sizing material rolls through mangler, undertaken shaping by the weight of regulation;
4) semi-finished product of forming are put into 85 ~ 88 DEG C of baking oven preheatings;
5) preheated sizing material is dropped into die cavity by the even arranged radially of its rolling direction, pushes vulcanizing press and carry out sulfuration:
Sulfurize temperature controls at 140 ~ 150 DEG C by A, initial vulcanization step, vulcanizing press matched moulds oil pressure cntrol at 16 ~ 18Mpa, cure time 15 minutes;
Sulfurize temperature controls at 160 ~ 170 DEG C mid-term by B, sulfuration, vulcanizing press matched moulds oil pressure cntrol at 12 ~ 14Mpa, cure time 20 ~ 30 minutes;
Sulfurize temperature controls at 120 ~ 130 DEG C by C, sulfuration later stage, vulcanizing press matched moulds oil pressure cntrol at 10 ~ 12Mpa, cure time 15 minutes;
6) after sulfuration through finishing, inspection after, seal ring body completes.
Three, the assembling of skeleton and seal ring body, to be encased in seal body in the endoporus of skeleton thus to complete the seal ring of automobile tension pulley bearing.
Adopt above technique, rationally, cost is lower for raw material and formula; By automation mechanized operation, avoid workman because causing scalding phenomenon with direct contact of material, effectively raise the working efficiency of vulcanizer, manufacturing efficiency is high, Security good.
Compared with prior art, the present invention has the following advantages:
1, after this seal ring adopts this component to fill a prescription, seal ring is due to based on nitrile butadiene rubber, add appropriate sulphur wherein again, base benzimidazole dredged by age resister, zine oxide, stearic acid, calcium hydroxide, alumina powder, dibutyl phthalate, silica and vulcanizing accelerator di-tert-butyl peroxide, component is very reasonable, seal ring can be made to have good rub resistance, and structural stability.
2, in the middle part of seal ring body, there is dust excluder lips, adopt this structure, dust-proof and oil sealing effect preferably can be made it have, improve the working life of expansion tightening wheel bearing, good dustproof effect.
3, in this preparation process, rationally, cost is lower for raw material and formula; By automation mechanized operation, avoid workman because causing scalding phenomenon with direct contact of material, effectively raise the working efficiency of vulcanizer, manufacturing efficiency is high, Security good.
Accompanying drawing explanation
Fig. 1 is the perspective view of this seal ring.
In figure, 1, seal ring body; 2, dust excluder lips; 3, skeleton.
Embodiment
Be below specific embodiments of the invention and by reference to the accompanying drawings, technological scheme of the present invention is further described, but the present invention be not limited to these embodiments.
The embodiment one of this seal ring:
As shown in Figure 1, the seal ring of this automobile tension pulley bearing, comprise skeleton 3 and seal ring body 1, seal ring body 1 is fixed in skeleton 3, there is in the middle part of seal ring body 1 dust excluder lips 2, adopt this structure, dust-proof and oil sealing effect preferably can be made it have, improve the working life of expansion tightening wheel bearing, good dustproof effect, seal ring body 1 comprises nitrile butadiene rubber, sulphur, base benzimidazole dredged by age resister, zine oxide, stearic acid, calcium hydroxide, alumina powder, dibutyl phthalate, silica and vulcanizing accelerator di-tert-butyl peroxide, described each component is as follows by mass percentage: nitrile butadiene rubber accounts for 70%-80%, sulphur accounts for 10%-20%, age resister is dredged base benzimidazole and is accounted for 1%-3%, zine oxide accounts for 0.5%-0.8%, stearic acid accounts for 2%-4%, calcium hydroxide accounts for 1%-5%, alumina powder accounts for 0.2%-0.6%, dibutyl phthalate accounts for 0.1%-0.3%, silica accounts for 3%-7% and vulcanizing accelerator di-tert-butyl peroxide accounts for 1%-4%, each component sum is 100%.
Nitrile butadiene rubber accounts for 70%, sulphur accounts for 16%, age resister dredges that base benzimidazole accounts for 2%, zine oxide accounts for 0.5%, stearic acid accounts for 3%, calcium hydroxide accounts for 4%, alumina powder accounts for 0.2%, dibutyl phthalate accounts for 0.3%, silica account for 3% and vulcanizing accelerator di-tert-butyl peroxide account for 1%.
The embodiment two of this seal ring:
As shown in Figure 1, the seal ring of this automobile tension pulley bearing, comprise skeleton 3 and seal ring body 1, seal ring body 1 is fixed in skeleton 3, there is in the middle part of seal ring body 1 dust excluder lips 2, adopt this structure, dust-proof and oil sealing effect preferably can be made it have, improve the working life of expansion tightening wheel bearing, good dustproof effect, seal ring body 1 comprises nitrile butadiene rubber, sulphur, base benzimidazole dredged by age resister, zine oxide, stearic acid, calcium hydroxide, alumina powder, dibutyl phthalate, silica and vulcanizing accelerator di-tert-butyl peroxide, described each component is as follows by mass percentage: nitrile butadiene rubber accounts for 70%-80%, sulphur accounts for 10%-20%, age resister is dredged base benzimidazole and is accounted for 1%-3%, zine oxide accounts for 0.5%-0.8%, stearic acid accounts for 2%-4%, calcium hydroxide accounts for 1%-5%, alumina powder accounts for 0.2%-0.6%, dibutyl phthalate accounts for 0.1%-0.3%, silica accounts for 3%-7% and vulcanizing accelerator di-tert-butyl peroxide accounts for 1%-4%, each component sum is 100%.
Nitrile butadiene rubber accounts for 72%, sulphur accounts for 12%, age resister dredges that base benzimidazole accounts for 2%, zine oxide accounts for 0.5%, stearic acid accounts for 3%, calcium hydroxide accounts for 4%, alumina powder accounts for 0.2%, dibutyl phthalate accounts for 0.3%, silica account for 5% and vulcanizing accelerator di-tert-butyl peroxide account for 1%.
The embodiment three of this seal ring:
As shown in Figure 1, the seal ring of this automobile tension pulley bearing, comprise skeleton 3 and seal ring body 1, seal ring body 1 is fixed in skeleton 3, there is in the middle part of seal ring body 1 dust excluder lips 2, adopt this structure, dust-proof and oil sealing effect preferably can be made it have, improve the working life of expansion tightening wheel bearing, good dustproof effect, seal ring body 1 comprises nitrile butadiene rubber, sulphur, base benzimidazole dredged by age resister, zine oxide, stearic acid, calcium hydroxide, alumina powder, dibutyl phthalate, silica and vulcanizing accelerator di-tert-butyl peroxide, described each component is as follows by mass percentage: nitrile butadiene rubber accounts for 70%-80%, sulphur accounts for 10%-20%, age resister is dredged base benzimidazole and is accounted for 1%-3%, zine oxide accounts for 0.5%-0.8%, stearic acid accounts for 2%-4%, calcium hydroxide accounts for 1%-5%, alumina powder accounts for 0.2%-0.6%, dibutyl phthalate accounts for 0.1%-0.3%, silica accounts for 3%-7% and vulcanizing accelerator di-tert-butyl peroxide accounts for 1%-4%, each component sum is 100%.
Nitrile butadiene rubber accounts for 75%, sulphur accounts for 10%, age resister dredges that base benzimidazole accounts for 2%, zine oxide accounts for 0.5%, stearic acid accounts for 3%, calcium hydroxide accounts for 4%, alumina powder accounts for 0.4%, dibutyl phthalate accounts for 0.1%, silica account for 5% and vulcanizing accelerator di-tert-butyl peroxide account for 2%.
The embodiment four of this seal ring:
As shown in Figure 1, the seal ring of this automobile tension pulley bearing, comprise skeleton 3 and seal ring body 1, seal ring body 1 is fixed in skeleton 3, there is in the middle part of seal ring body 1 dust excluder lips 2, adopt this structure, dust-proof and oil sealing effect preferably can be made it have, improve the working life of expansion tightening wheel bearing, good dustproof effect, seal ring body 1 comprises nitrile butadiene rubber, sulphur, base benzimidazole dredged by age resister, zine oxide, stearic acid, calcium hydroxide, alumina powder, dibutyl phthalate, silica and vulcanizing accelerator di-tert-butyl peroxide, described each component is as follows by mass percentage: nitrile butadiene rubber accounts for 70%-80%, sulphur accounts for 10%-20%, age resister is dredged base benzimidazole and is accounted for 1%-3%, zine oxide accounts for 0.5%-0.8%, stearic acid accounts for 2%-4%, calcium hydroxide accounts for 1%-5%, alumina powder accounts for 0.2%-0.6%, dibutyl phthalate accounts for 0.1%-0.3%, silica accounts for 3%-7% and vulcanizing accelerator di-tert-butyl peroxide accounts for 1%-4%, each component sum is 100%.
Nitrile butadiene rubber accounts for 78%, sulphur accounts for 10%, age resister dredges that base benzimidazole accounts for 2%, zine oxide accounts for 0.5%, stearic acid accounts for 3%, calcium hydroxide accounts for 2%, alumina powder accounts for 0.2%, dibutyl phthalate accounts for 0.3%, silica account for 3% and vulcanizing accelerator di-tert-butyl peroxide account for 1%.
The embodiment five of this seal ring:
As shown in Figure 1, the seal ring of this automobile tension pulley bearing, comprise skeleton 3 and seal ring body 1, seal ring body 1 is fixed in skeleton 3, there is in the middle part of seal ring body 1 dust excluder lips 2, adopt this structure, dust-proof and oil sealing effect preferably can be made it have, improve the working life of expansion tightening wheel bearing, good dustproof effect, seal ring body 1 comprises nitrile butadiene rubber, sulphur, base benzimidazole dredged by age resister, zine oxide, stearic acid, calcium hydroxide, alumina powder, dibutyl phthalate, silica and vulcanizing accelerator di-tert-butyl peroxide, described each component is as follows by mass percentage: nitrile butadiene rubber accounts for 70%-80%, sulphur accounts for 10%-20%, age resister is dredged base benzimidazole and is accounted for 1%-3%, zine oxide accounts for 0.5%-0.8%, stearic acid accounts for 2%-4%, calcium hydroxide accounts for 1%-5%, alumina powder accounts for 0.2%-0.6%, dibutyl phthalate accounts for 0.1%-0.3%, silica accounts for 3%-7% and vulcanizing accelerator di-tert-butyl peroxide accounts for 1%-4%, each component sum is 100%.
Nitrile butadiene rubber accounts for 80%, sulphur accounts for 10%, age resister dredges that base benzimidazole accounts for 1%, zine oxide accounts for 0.5%, stearic acid accounts for 2%, calcium hydroxide accounts for 2%, alumina powder accounts for 0.2%, dibutyl phthalate accounts for 0.3%, silica account for 3% and vulcanizing accelerator di-tert-butyl peroxide account for 1%.
After adopting above component to fill a prescription, seal ring is due to based on nitrile butadiene rubber, add appropriate sulphur wherein again, base benzimidazole dredged by age resister, zine oxide, stearic acid, calcium hydroxide, alumina powder, dibutyl phthalate, silica and vulcanizing accelerator di-tert-butyl peroxide, component is very reasonable, seal ring can be made to have good rub resistance, and structural stability.
The embodiment one of this preparation process:
The preparation process of the seal ring of this automobile tension pulley bearing, this technique comprises the following steps: one, the making of skeleton; Adopt stainless steel material to make in circular skeleton, skeleton adopts mould one-body molded;
Two, the making of seal ring body; 1) first make nitrile butadiene rubber: after part natural rubber is cut into 2mm thin-pass on a mill until, add butyronitrile, mixing evenly after, make nitrile butadiene rubber;
2) then nitrile butadiene rubber is put in banbury, add sulphur successively again, base benzimidazole dredged by age resister, zine oxide, stearic acid, calcium hydroxide, alumina powder, dibutyl phthalate, silica and vulcanizing accelerator di-tert-butyl peroxide, mixing 11 minutes, mention upper top-bolt sulphur is added, binder removal after mixing 65 seconds again, bottom sheet, cooling after mill turns refining; This step Mooney viscosity ML (1+4) 120 DEG C controls 75;
3) by step 2) cooled sizing material rolls through mangler, undertaken shaping by the weight of regulation;
4) semi-finished product of forming are put into 85 DEG C of baking oven preheatings;
5) preheated sizing material is dropped into die cavity by the even arranged radially of its rolling direction, pushes vulcanizing press and carry out sulfuration:
Sulfurize temperature controls at 140 DEG C by A, initial vulcanization step, vulcanizing press matched moulds oil pressure cntrol at 16Mpa, cure time 15 minutes;
Sulfurize temperature controls at 160 DEG C mid-term by B, sulfuration, vulcanizing press matched moulds oil pressure cntrol at 12Mpa, cure time 20 minutes;
Sulfurize temperature controls at 120 DEG C by C, sulfuration later stage, vulcanizing press matched moulds oil pressure cntrol at 10Mpa, cure time 15 minutes;
6) after sulfuration through finishing, inspection after, seal ring body completes.
Three, the assembling of skeleton and seal ring body, to be encased in seal body in the endoporus of skeleton thus to complete the seal ring of automobile tension pulley bearing.
The embodiment two of this preparation process:
The preparation process of the seal ring of this automobile tension pulley bearing, this technique comprises the following steps: one, the making of skeleton; Adopt stainless steel material to make in circular skeleton, skeleton adopts mould one-body molded;
Two, the making of seal ring body; 1) first make nitrile butadiene rubber: after part natural rubber is cut into 2-5mm thin-pass on a mill until, add butyronitrile, mixing evenly after, make nitrile butadiene rubber;
2) then nitrile butadiene rubber is put in banbury, add sulphur successively again, base benzimidazole dredged by age resister, zine oxide, stearic acid, calcium hydroxide, alumina powder, dibutyl phthalate, silica and vulcanizing accelerator di-tert-butyl peroxide, mixing 13 minutes, mention upper top-bolt sulphur is added, binder removal after mixing 80 seconds again, bottom sheet, cooling after mill turns refining; This step Mooney viscosity ML (1+4) 120 DEG C controls 80;
3) by step 2) cooled sizing material rolls through mangler, undertaken shaping by the weight of regulation;
4) semi-finished product of forming are put into 86 DEG C of baking oven preheatings;
5) preheated sizing material is dropped into die cavity by the even arranged radially of its rolling direction, pushes vulcanizing press and carry out sulfuration:
Sulfurize temperature controls at 145 DEG C by A, initial vulcanization step, vulcanizing press matched moulds oil pressure cntrol at 17Mpa, cure time 15 minutes;
Sulfurize temperature controls at 165 DEG C mid-term by B, sulfuration, vulcanizing press matched moulds oil pressure cntrol at 13Mpa, cure time 25 minutes;
Sulfurize temperature controls at 125 DEG C by C, sulfuration later stage, vulcanizing press matched moulds oil pressure cntrol at 11Mpa, cure time 15 minutes;
6) after sulfuration through finishing, inspection after, seal ring body completes.
Three, the assembling of skeleton and seal ring body, to be encased in seal body in the endoporus of skeleton thus to complete the seal ring of automobile tension pulley bearing.
The embodiment three of this preparation process:
The preparation process of the seal ring of this automobile tension pulley bearing, this technique comprises the following steps: one, the making of skeleton; Adopt stainless steel material to make in circular skeleton, skeleton adopts mould one-body molded;
Two, the making of seal ring body; 1) first make nitrile butadiene rubber: after part natural rubber is cut into 5mm thin-pass on a mill until, add butyronitrile, mixing evenly after, make nitrile butadiene rubber;
2) then nitrile butadiene rubber is put in banbury, add sulphur successively again, base benzimidazole dredged by age resister, zine oxide, stearic acid, calcium hydroxide, alumina powder, dibutyl phthalate, silica and vulcanizing accelerator di-tert-butyl peroxide, mixing 15 minutes, mention upper top-bolt sulphur is added, binder removal after mixing 96 seconds again, bottom sheet, cooling after mill turns refining; This step Mooney viscosity ML (1+4) 120 DEG C controls 85;
3) by step 2) cooled sizing material rolls through mangler, undertaken shaping by the weight of regulation;
4) semi-finished product of forming are put into 88 DEG C of baking oven preheatings;
5) preheated sizing material is dropped into die cavity by the even arranged radially of its rolling direction, pushes vulcanizing press and carry out sulfuration:
Sulfurize temperature controls at 150 DEG C by A, initial vulcanization step, vulcanizing press matched moulds oil pressure cntrol at 18Mpa, cure time 15 minutes;
Sulfurize temperature controls at 170 DEG C mid-term by B, sulfuration, vulcanizing press matched moulds oil pressure cntrol at 14Mpa, cure time 30 minutes;
Sulfurize temperature controls at 130 DEG C by C, sulfuration later stage, vulcanizing press matched moulds oil pressure cntrol at 12Mpa, cure time 15 minutes;
6) after sulfuration through finishing, inspection after, seal ring body completes.
Three, the assembling of skeleton and seal ring body, to be encased in seal body in the endoporus of skeleton thus to complete the seal ring of automobile tension pulley bearing.
Adopt above technique, rationally, cost is lower for raw material and formula; By automation mechanized operation, avoid workman because causing scalding phenomenon with direct contact of material, effectively raise the working efficiency of vulcanizer, manufacturing efficiency is high, Security good.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (7)
1. the seal ring of automobile tension pulley bearing, comprise skeleton and seal ring body, seal ring body is fixed in skeleton, in the middle part of seal ring body, there is dust excluder lips, it is characterized in that, seal ring body comprises nitrile butadiene rubber, sulphur, base benzimidazole dredged by age resister, zine oxide, stearic acid, calcium hydroxide, alumina powder, dibutyl phthalate, silica and vulcanizing accelerator di-tert-butyl peroxide, described each component is as follows by mass percentage: nitrile butadiene rubber accounts for 70%-80%, sulphur accounts for 10%-20%, age resister is dredged base benzimidazole and is accounted for 1%-3%, zine oxide accounts for 0.5%-0.8%, stearic acid accounts for 2%-4%, calcium hydroxide accounts for 1%-5%, alumina powder accounts for 0.2%-0.6%, dibutyl phthalate accounts for 0.1%-0.3%, silica accounts for 3%-7% and vulcanizing accelerator di-tert-butyl peroxide accounts for 1%-4%, each component sum is 100%.
2. the seal ring of automobile tension pulley bearing according to claim 1, it is characterized in that, described nitrile butadiene rubber accounts for 70%, sulphur accounts for 16%, age resister dredges that base benzimidazole accounts for 2%, zine oxide accounts for 0.5%, stearic acid accounts for 3%, calcium hydroxide accounts for 4%, alumina powder accounts for 0.2%, dibutyl phthalate accounts for 0.3%, silica account for 3% and vulcanizing accelerator di-tert-butyl peroxide account for 1%.
3. the seal ring of automobile tension pulley bearing according to claim 1, it is characterized in that, described nitrile butadiene rubber accounts for 72%, sulphur accounts for 12%, age resister dredges that base benzimidazole accounts for 2%, zine oxide accounts for 0.5%, stearic acid accounts for 3%, calcium hydroxide accounts for 4%, alumina powder accounts for 0.2%, dibutyl phthalate accounts for 0.3%, silica account for 5% and vulcanizing accelerator di-tert-butyl peroxide account for 1%.
4. the seal ring of automobile tension pulley bearing according to claim 1, it is characterized in that, described nitrile butadiene rubber accounts for 75%, sulphur accounts for 10%, age resister dredges that base benzimidazole accounts for 2%, zine oxide accounts for 0.5%, stearic acid accounts for 3%, calcium hydroxide accounts for 4%, alumina powder accounts for 0.4%, dibutyl phthalate accounts for 0.1%, silica account for 5% and vulcanizing accelerator di-tert-butyl peroxide account for 2%.
5. the seal ring of automobile tension pulley bearing according to claim 1, it is characterized in that, described nitrile butadiene rubber accounts for 78%, sulphur accounts for 10%, age resister dredges that base benzimidazole accounts for 2%, zine oxide accounts for 0.5%, stearic acid accounts for 3%, calcium hydroxide accounts for 2%, alumina powder accounts for 0.2%, dibutyl phthalate accounts for 0.3%, silica account for 3% and vulcanizing accelerator di-tert-butyl peroxide account for 1%.
6. the seal ring of automobile tension pulley bearing according to claim 1, it is characterized in that, described nitrile butadiene rubber accounts for 80%, sulphur accounts for 10%, age resister dredges that base benzimidazole accounts for 1%, zine oxide accounts for 0.5%, stearic acid accounts for 2%, calcium hydroxide accounts for 2%, alumina powder accounts for 0.2%, dibutyl phthalate accounts for 0.3%, silica account for 3% and vulcanizing accelerator di-tert-butyl peroxide account for 1%.
7. the preparation process of the seal ring of automobile tension pulley bearing, this technique comprises the following steps: one, the making of skeleton; Adopt stainless steel material to make in circular skeleton, skeleton adopts mould one-body molded;
Two, the making of seal ring body; 1) first make nitrile butadiene rubber: after part natural rubber is cut into 2-5mm thin-pass on a mill until, add butyronitrile, mixing evenly after, make nitrile butadiene rubber;
2) then nitrile butadiene rubber is put in banbury, add sulphur successively again, base benzimidazole dredged by age resister, zine oxide, stearic acid, calcium hydroxide, alumina powder, dibutyl phthalate, silica and vulcanizing accelerator di-tert-butyl peroxide, mixing 11 ~ 15 minutes, mention upper top-bolt sulphur is added, binder removal after mixing 65 ~ 96 seconds again, bottom sheet, cooling after mill turns refining; This step Mooney viscosity ML (1+4) 120 DEG C controls 80 ± 5;
3) by step 2) cooled sizing material rolls through mangler, undertaken shaping by the weight of regulation;
4) semi-finished product of forming are put into 85 ~ 88 DEG C of baking oven preheatings;
5) preheated sizing material is dropped into die cavity by the even arranged radially of its rolling direction, pushes vulcanizing press and carry out sulfuration:
Sulfurize temperature controls at 140 ~ 150 DEG C by A, initial vulcanization step, vulcanizing press matched moulds oil pressure cntrol at 16 ~ 18Mpa, cure time 15 minutes;
Sulfurize temperature controls at 160 ~ 170 DEG C mid-term by B, sulfuration, vulcanizing press matched moulds oil pressure cntrol at 12 ~ 14Mpa, cure time 20 ~ 30 minutes;
Sulfurize temperature controls at 120 ~ 130 DEG C by C, sulfuration later stage, vulcanizing press matched moulds oil pressure cntrol at 10 ~ 12Mpa, cure time 15 minutes;
6) after sulfuration through finishing, inspection after, seal ring body completes.
Three, the assembling of skeleton and seal ring body, to be encased in seal body in the endoporus of skeleton thus to complete the seal ring of automobile tension pulley bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510303993.4A CN104963951A (en) | 2015-06-05 | 2015-06-05 | Sealing ring for automobile tensioning wheel bearing and preparing technology of sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510303993.4A CN104963951A (en) | 2015-06-05 | 2015-06-05 | Sealing ring for automobile tensioning wheel bearing and preparing technology of sealing ring |
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| Publication Number | Publication Date |
|---|---|
| CN104963951A true CN104963951A (en) | 2015-10-07 |
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| CN201510303993.4A Pending CN104963951A (en) | 2015-06-05 | 2015-06-05 | Sealing ring for automobile tensioning wheel bearing and preparing technology of sealing ring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107383489A (en) * | 2017-09-23 | 2017-11-24 | 安徽福斯特铝制品股份有限公司 | A kind of bearing sealed ring of automotive hub |
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Application publication date: 20151007 |