CN1014426B - Glassy lubricant used for hot perforating of stainless steel - Google Patents
Glassy lubricant used for hot perforating of stainless steelInfo
- Publication number
- CN1014426B CN1014426B CN 90106686 CN90106686A CN1014426B CN 1014426 B CN1014426 B CN 1014426B CN 90106686 CN90106686 CN 90106686 CN 90106686 A CN90106686 A CN 90106686A CN 1014426 B CN1014426 B CN 1014426B
- Authority
- CN
- China
- Prior art keywords
- lubricant
- stainless steel
- glass
- perforation
- present
- 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.)
- Expired
Links
Abstract
The present invention belongs to a lubricant for perforation of a metallurgy field, particularly to a glass lubricant which is especially suitable for the perforation of stainless steel. The lubricant is a silicon-boron-aluminum-sodium series glass lubricant designed according to the defects of the existing lubricant in the field of a heat perforation pipe; meanwhile, the content of each oxide is properly adjusted according to the function of each element to enhance the chemical stability of the lubricant. The lubricant also has the advantages of low softening point and stable high temperature viscosity. The lubricant has a good long-term lubrication effect at 800 DEG C to 1200 DEG C. The service life of a top head can be enhanced more than 4 times. The qualification rate of a product is also obviously enhanced.
Description
The invention belongs in the field of metallurgy hot piercing with lubricator.Be specially adapted to the glass lubricant of stainless steel perforation.
At present both at home and abroad in producing stainless steel perforation field employed lubricant graphite, molybdenumdisulphide etc. are arranged, this series lubricant agent is because at high temperature viscosity is low excessively, topped inhomogeneous and lubricant effect is poor to coming directly towards the surface, make defectives such as the residual a lot of invagination of hollow billet inwall, sparrow skin.Cause the product lumber recovery very low.Therefore both at home and abroad stainless steel is bored a hole and with lubricator all research and develop.Patent as external introduction has SU654676, SU785349 etc.These documents are introduced is used for that the hot piercing lubricant is the high boron of high sodium or high sodium does not have boron lubricant series.The main drawback of these lubricants is softening temperature height, the big and poor product quality of viscosity, lubricant moisture-sensitive caking etc.
The purpose of this invention is to provide a kind of glassy lubricant used for hot perforating of stainless steel that has low softening temperature and stable high temperature viscosity when being useful in 800 ℃-1200 ℃.
For solving above-mentioned purpose, it is (weight %) SiO that the chemical ingredients of glass lubricant is used in the designed stainless steel perforation of the present invention
242～50%; Na
2O 11～13%; B
2O
328～32%; Al
2O
33～5%; CaO 6～8%.
In glass lubricant of the present invention, B
2O
3Add as chemical stability that improves lubricant and conciliation high temperature viscosity, its content is 28-32%.The composition of high borosilicate glass is mainly by SiO
2And B
2O
3Formation agent as glass, promptly in glass, form silicon-oxy tetrahedron and boron oxygen tetrahedron (or trihedron), boron combines with sodium ion, oxide compound such as aluminium, calcium is filled in the silica skeleton structure, boron content height then needs more alkaline metal oxide, but the combination of this glass is unstable, and softening temperature is low, is not suitable as the glass lubricant in the time of 800 ℃～1200 ℃.Silicone content then increased when boron content was low, and the softening temperature of high silica glass is too high, can not form composite lubricating film under above-mentioned working conditions, thereby also inapplicable.
Though aluminium, calcium oxide play the viscosity that improves lubricant in glass lubricant composition of the present invention, compare SiO
2Effect much smaller.In the composition of lubricant of the present invention, added the univalent sodium oxide, mainly be the viscosity that reduces lubricant, it combines with aluminium, calcium oxide to play and reconciles lubricant high temperature viscosity and softening temperature, but content need be controlled in the composition range of the present invention, do not have an above-mentioned effect as content is low excessively, the too high levels then chemical stability of glass lubricant is very poor, easily deliquescence, it is very big to fluctuate during use, the lubricant effect extreme difference.Therefore as Na in the lubricant component content of the present invention
2O 11～13%; Al
2O
33～5%; CaO 6～8%.The composition design of this lubricant mainly is to satisfy every requirement of stainless steel being carried out hot piercing in the time of 800 ℃～1200 ℃.Lubricant of the present invention is silicon-boron-aluminium-soda glass system and the content of suitably adjusting each oxide compound, to improve its chemical stability, makes to add the man-hour glass lubricant at metal fever " length property " arranged accordingly.Be that glass lubricant is under this working conditions, maintain the high temperature viscosity and the softening temperature that adapt, be unlikely to lose greatly in the lubricant effect of lubricant with because of the too little lubricant of viscosity runs off because of viscosity, can not forming continuously when hot piercing, film loses lubrication.
The production of lubricant of the present invention is by above-mentioned requirements, after each component content prepared and mix, melting is solidified again, its melting system is 1200 ℃～1400 ℃/4 hours+1400 ℃～1450 ℃/10 hours, behind glass lubricant pulverizing after will solidifying again, ball milling and the closed vibratory screening apparatus sieve, its granularity is controlled at 120 orders～180 orders.
Glass lubricant of the present invention has following characteristics compared with prior art.In the prior art, adopt the molybdenum perforating head not add lubricant, its every about 30 arms of head lifetime, same top add lubricant of the present invention then every perforation more than 300.And employing 3Cr
2The W8V top compares, and adopts glass lubricant perforation of the present invention, and its top can be improved more than 4 times work-ing life.Owing to adopted glass lubricant of the present invention, improved lubricant effect, reduced axial force, also improve punching rate simultaneously and improved 30% production efficiency, also make the hollow billet qualification rate have significant raising.Glass lubricant when the boring a hole viscosity designed owing to the present invention is suitable, and lubricated " long property " is effective, and lubricant is topped evenly, and the while has also reduced the rate of oxidation that comes directly towards self, has improved labor condition significantly.
Embodiment
Adopt three kinds of prepared lubricants of composition scope of glass lubricant of the present invention, its concrete chemical ingredients sees Table 1.Melting curing again after again the lubricant raw material of preparing being mixed, its smelting temperature are 4 hours+1440 ℃ insulations of 1300 ℃ of insulations 10 hours.Lubricant after will solidifying again sieves about 140 orders of its granularity after pulverizing ball milling.The performance of the glass lubricant after testing sees Table 2.Table 3 is to adopt the comparative result of molybdenum plug to the stainless steel perforation, and 1,2,3 is to adopt the molybdenum plug of glass lubricant of the present invention to the stainless steel perforations results in table 3, and 4 for not add the molybdenum plug of lubricant to the stainless steel perforations results in the table 3.Above-mentioned piercing temperature can find out by the comparative result of table 3 all at 1050 ℃～1150 ℃, adopts glass lubricant of the present invention to not
The perforation of rust steel has tangible lubricant effect.
Table 3 glass lubricant of the present invention uses the contrast effect contrast
Sequence number punching rate (meter per second) top (propping up) steel pipe qualification rate in work-ing life (%)
1 0.18 500 92
2 0.15 440 91
3 0.14 350 91.8
4 0.12 30 83
Claims (1)
1, a kind of glassy lubricant used for hot perforating of stainless steel that is used for is characterized in that the chemical ingredients of this glass lubricant is (weight %) SiO
242～50%; Na
2O11～13%; B
2O
328～32%; Al
2O
33-5%; CaO6～8%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90106686 CN1014426B (en) | 1990-08-16 | 1990-08-16 | Glassy lubricant used for hot perforating of stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90106686 CN1014426B (en) | 1990-08-16 | 1990-08-16 | Glassy lubricant used for hot perforating of stainless steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1048405A CN1048405A (en) | 1991-01-09 |
| CN1014426B true CN1014426B (en) | 1991-10-23 |
Family
ID=4880210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90106686 Expired CN1014426B (en) | 1990-08-16 | 1990-08-16 | Glassy lubricant used for hot perforating of stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1014426B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055111C (en) * | 1997-02-04 | 2000-08-02 | 中国科学院物理研究所 | Composite strontium titanate electrically rheological liquid and its preparation |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA963198B (en) * | 1995-05-16 | 1996-10-25 | Timcal Ltd | Lubricant composition for use on workpieces in the hot forming of metals |
| CN1322101C (en) * | 2004-08-26 | 2007-06-20 | 徐志国 | Glass lubricant |
| JP4518205B2 (en) * | 2008-12-01 | 2010-08-04 | 住友金属工業株式会社 | Manufacturing method of upper glass forming material for hot drilling and billet for hot extrusion pipe making |
| JP5142232B2 (en) * | 2010-12-22 | 2013-02-13 | 新日鐵住金株式会社 | Seamless steel pipe manufacturing method |
| CN109604342A (en) * | 2018-11-14 | 2019-04-12 | 张家港华程特种材料股份有限公司 | A kind of processing method of seamless steel pipe |
-
1990
- 1990-08-16 CN CN 90106686 patent/CN1014426B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055111C (en) * | 1997-02-04 | 2000-08-02 | 中国科学院物理研究所 | Composite strontium titanate electrically rheological liquid and its preparation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1048405A (en) | 1991-01-09 |
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Legal Events
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |