CN104960124B - A kind of cartridge abrasion disc nylon blank compression molding process - Google Patents
A kind of cartridge abrasion disc nylon blank compression molding process Download PDFInfo
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- CN104960124B CN104960124B CN201510335620.5A CN201510335620A CN104960124B CN 104960124 B CN104960124 B CN 104960124B CN 201510335620 A CN201510335620 A CN 201510335620A CN 104960124 B CN104960124 B CN 104960124B
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Abstract
The present invention relates to a kind of cartridge abrasion disc nylon blank compression molding process, belong to railway nylon aftermarket product field shaping technique, concretely comprise the following steps：（1）Prepare melt material；（2）Die casting is preheated；（3）Active melt material is injected in preheated mold, after material polymerization, give the pressure not less than 5MPa and carry out die casting；（4）Blank carries out thermal finalization processing after the demoulding.The present invention is by being improved cartridge abrasion disc blank moulding process, on the basis of original static casting technique, gives certain pressure after polymerisation and carries out die casting, the air bubble problem in blank shaping can be solved, so as to greatly improve the qualification rate of blank.
Description
Technical field
The present invention relates to railway nylon aftermarket product field shaping techniques, are specially a kind of cartridge abrasion disc nylon blank pressure
Type casting moulding technique.
Background technology
Casting cartridge abrasion disc（Pad）It is the key that one of rolling stock accessory, in roller bearing adapter
Between and side bearing support entire car body together.It is lateral that the frictional resistance of casting cartridge abrasion disc constrains car body to a certain extent
Movement, thus the performance requirement of casting cartridge abrasion disc directly affects the safety of car body operation.
At present, the widely used traditional static casting technique of cartridge abrasion disc blank moulding process, using the technique poly-
The air bubble problem formed during synthesis type hardly results in solution.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of cartridge abrasion disc nylon blank compression molding process, energy
The air bubble problem in blank shaping is enough solved, greatly improves the qualification rate of blank.
To solve the above problems, the technical solution used in the present invention is：
A kind of cartridge abrasion disc nylon blank compression molding process, specifically includes following step：
（1）Prepare melt material；
（2）Die casting is preheated；
（3）Active melt material is injected in preheated mold, after material polymerization, give pressure not less than 5MPa into
Row die casting；
（4）Blank carries out thermal finalization processing after the demoulding.
Further, the step（3）In polymerization time be 80~100s.
Further, the step（3）The pressure of middle press casting procedure is 5-20MPa.
Further, the step（3）In, give pressurize after the pressure of 5-20MPa, dwell time 5-15min.
Further, step（2）It is middle that mold is preheated to 130-165 DEG C.
Further, the step（1）Middle melt material is prepared using following methods：After caprolactam is melted, add in true
In empty retort, when temperature rises to 138-142 DEG C, the sodium hydroxide of caprolactam weight 1.2-2.0 ‰ is added in, is smoked rapidly
Vacuum, vacuum degree are maintained at >=-0.095MPa, vacuum dehydration 3-5min, add in ‰ leakerna glues of caprolactam weight 20-30,
Form melt material.
It is using advantageous effect caused by above-mentioned technical proposal：
It is 1. easy to operate；2. bubble is resolved in casting cycle；3. improve blank qualification rate.
The present invention is by being improved cartridge abrasion disc blank moulding process, on the basis of original static casting technique
On, certain pressure is given after polymerisation and carries out die casting, the air bubble problem in blank shaping can be solved, so as to greatly improve blank
Qualification rate.
Pass through the static casting technique of 6 months of statistics and the qualification rate of compression molding process products obtained therefrom, die cast
The qualification rate of technique products obtained therefrom can reach more than 99%, and compression molding process is compared with static casting technique products obtained therefrom
Qualification rate improves 27%~43%, and effect is fairly obvious.Specific data are shown in Table 1；
1 cartridge abrasion disc static casting technique of table and the compression molding process qualification rate of the present invention compare
The product physical and mechanical property testing result obtained using the process of the present invention, is shown in Table 2, from the physics of table 2
Mechanics properties testing data understand that the main physico-mechanical performance using cartridge abrasion disc blank obtained by the present invention all meets
The requirement of TB/T3270-2011 technical standards, and performance is relatively stable.
The cartridge abrasion disc blank main physico-mechanical performance test results of 2 present invention of table
Specific embodiment
Invention is described in further detail with reference to specific embodiment 1-4：
Embodiment 1
（1）Prepare melt material：After caprolactam is melted, add in vacum reaction tank, when temperature rises to 138 DEG C, add
Enter the sodium hydroxide of caprolactam weight 1.2 ‰, smoke vacuum rapidly, vacuum degree is maintained at >=-0.095MPa, vacuum dehydration
3min adds in 20 ‰ leakerna glue of caprolactam weight, forms melt material.
（2）High-temperature silicon oil heat process is carried out to mold, mold preheating temperature is 130 DEG C；
（3）Active melt material is injected in preheated mold, polymerization time 80s, given after polymerization the pressure of 5MPa into
Row die casting；
（4）Blank carries out thermal finalization processing after the demoulding.
The main physico-mechanical performance test results of products obtained therefrom are consistent with table 2.
Embodiment 2
（1）Prepare melt material：After caprolactam is melted, add in vacum reaction tank, when temperature rises to 140 DEG C, add
Enter the sodium hydroxide of caprolactam weight 1.4 ‰, smoke vacuum rapidly, vacuum degree is maintained at >=-0.095MPa, vacuum dehydration
4min adds in 23 ‰ leakerna glue of caprolactam weight, forms melt material.
（2）High-temperature silicon oil heat process is carried out to mold, mold preheating temperature is 140 DEG C；
（3）Active melt material is injected in preheated mold, polymerization time 90s, given after polymerization the pressure of 10MPa into
Row die casting；
（4）Blank carries out thermal finalization processing after the demoulding.
The main physico-mechanical performance test results of products obtained therefrom are consistent with table 2.
Embodiment 3
（1）Prepare melt material：After caprolactam is melted, add in vacum reaction tank, when temperature rises to 142 DEG C, add
Enter the sodium hydroxide of caprolactam weight 1.6 ‰, smoke vacuum rapidly, vacuum degree is maintained at >=-0.095MPa, vacuum dehydration
4min adds in 25 ‰ leakerna glue of caprolactam weight, forms melt material.
（2）High-temperature silicon oil heat process is carried out to mold, mold preheating temperature is 150 DEG C；
（3）Active melt material is injected in preheated mold, polymerization time 95s, given after polymerization the pressure of 15MPa into
Row die casting；
（4）Blank carries out thermal finalization processing after the demoulding.
The main physico-mechanical performance test results of products obtained therefrom are consistent with table 2.
Embodiment 4
（1）Prepare melt material：After caprolactam is melted, add in vacum reaction tank, when temperature rises to 142 DEG C, add
Enter the sodium hydroxide of caprolactam weight 2.0 ‰, smoke vacuum rapidly, vacuum degree is maintained at >=-0.095MPa, vacuum dehydration
5min adds in 30 ‰ leakerna glue of caprolactam weight, forms melt material.
（2）High-temperature silicon oil heat process is carried out to mold, mold preheating temperature is 165 DEG C；
（3）Active melt material is injected in preheated mold, polymerization time 100s, the pressure of 20MPa is given after polymerization
Carry out die casting；
（4）Blank carries out thermal finalization processing after the demoulding.
The main physico-mechanical performance test results of products obtained therefrom are consistent with table 2.
For embodiment 1-4 when carrying out die casting, the dwell time is preferably 5min-15min.
It is detected by the physical and mechanical property to embodiment 1-4 products obtained therefroms, gained cartridge abrasion disc blank
Main physico-mechanical performance all meets the requirement of TB/T3270-2011 technical standards, and performance is relatively stable.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
To modify to the technical solution recorded in previous embodiment or carry out equivalent substitution to which part technical characteristic；And
These modifications are replaced, and the essence of appropriate technical solution is not made to depart from the spirit and model of technical solution of the embodiment of the present invention
It encloses.
Claims (4)
1. a kind of cartridge abrasion disc nylon blank compression molding process, which is characterized in that specifically include following step：
（1）Prepare melt material；
（2）Die casting is preheated；
（3）Active melt material is injected in preheated mold, after material polymerization, the pressure for giving 5-20MPa is pressed
Casting, gives pressurize after the pressure of 5-20MPa, dwell time 5-15min；
（4）Blank carries out thermal finalization processing after the demoulding.
A kind of 2. cartridge abrasion disc nylon blank compression molding process according to claim 1, which is characterized in that the step
Suddenly（3）In polymerization time be 80~100s.
A kind of 3. cartridge abrasion disc nylon blank compression molding process according to claim 1, which is characterized in that step
（2）It is middle that mold is preheated to 130-165 DEG C.
4. according to a kind of cartridge abrasion disc nylon blank compression molding process of claim 1-3 any one of them, feature exists
In the step（1）Middle melt material is prepared using following methods：After caprolactam is melted, add in vacum reaction tank, work as temperature
When degree rises to 138-142 DEG C, the sodium hydroxide of caprolactam weight 1.2-2.0 ‰ is added in, smokes vacuum rapidly, vacuum degree is kept
In >=-0.095MPa, vacuum dehydration 3-5min, ‰ leakerna glues of caprolactam weight 20-30 are added in, form melt material.
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| CN201510335620.5A CN104960124B (en) | 2015-06-17 | 2015-06-17 | A kind of cartridge abrasion disc nylon blank compression molding process |
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| CN104960124B true CN104960124B (en) | 2018-05-22 |
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| CN113370433B (en) * | 2020-03-09 | 2023-04-18 | 邢台中车环保科技有限公司 | Method for producing cast nylon bar |
| CN112555483A (en) * | 2020-12-17 | 2021-03-26 | 富山阀门实业(东台)有限公司 | Internet of things water flow digital display control valve and die-casting forming process |
| CN113021959B (en) * | 2021-03-25 | 2022-08-16 | 吴培 | Manufacturing method of thin-wall cast nylon plate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101614220A (en) * | 2009-07-15 | 2009-12-30 | 重庆市泰伯铸型尼龙有限责任公司 | A kind of high-strength nylon formula and making method that is used for blower wheel |
| CN104260252A (en) * | 2014-08-01 | 2015-01-07 | 河北辛集腾跃实业有限公司 | Production method of low-temperature resistant heart disk wear plate |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH10503439A (en) * | 1994-08-01 | 1998-03-31 | ゲー・シュバルツ・ゲー・エム・ベー・ハー・ウント・コー・カー・ゲー | Method for producing molded article by polymerization of lactam in mold |
| CN102146160A (en) * | 2011-01-24 | 2011-08-10 | 淮安市山阳工矿塑料有限公司 | Modified cast nylon |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101614220A (en) * | 2009-07-15 | 2009-12-30 | 重庆市泰伯铸型尼龙有限责任公司 | A kind of high-strength nylon formula and making method that is used for blower wheel |
| CN104260252A (en) * | 2014-08-01 | 2015-01-07 | 河北辛集腾跃实业有限公司 | Production method of low-temperature resistant heart disk wear plate |
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Address after: City Street East Xinji city 052360 Hebei city of Shijiazhuang Province Applicant after: HEBEI TENGYUE RAILWAY EQUIPMENT CO.,LTD. Address before: City Street East Xinji city 052360 Hebei city of Shijiazhuang Province Applicant before: HEBEI XINJI TENGYUE INDUSTRIAL CO.,LTD. |
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Effective date of registration: 20230515 Address after: 050000 No. 0159 Shifu East Street, Xinji City, Shijiazhuang City, Hebei Province Patentee after: HEBEI TENGYUE RAILWAY EQUIPMENT CO.,LTD. Patentee after: Hebei Tengyue Railway Vehicle Parts Technology Co.,Ltd. Address before: 052360 eastern section of Shifu street, Xinji City, Shijiazhuang, Hebei Patentee before: HEBEI TENGYUE RAILWAY EQUIPMENT CO.,LTD. |