EP0721991B1 - Verfahren zur Herstellung eines aus korrosionsbeständigem Stahl bestehenden Spreizankers - Google Patents
Verfahren zur Herstellung eines aus korrosionsbeständigem Stahl bestehenden Spreizankers Download PDFInfo
- Publication number
- EP0721991B1 EP0721991B1 EP95116384A EP95116384A EP0721991B1 EP 0721991 B1 EP0721991 B1 EP 0721991B1 EP 95116384 A EP95116384 A EP 95116384A EP 95116384 A EP95116384 A EP 95116384A EP 0721991 B1 EP0721991 B1 EP 0721991B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- expansion
- corrosion
- alloying constituents
- sleeve
- enriched
- 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 - Lifetime
Links
- 239000010935 stainless steel Substances 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims description 12
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 title description 2
- 238000000137 annealing Methods 0.000 claims abstract description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 7
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 5
- 150000004767 nitrides Chemical class 0.000 claims abstract description 5
- 150000001247 metal acetylides Chemical class 0.000 claims abstract description 4
- 239000007858 starting material Substances 0.000 claims abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 239000011651 chromium Substances 0.000 claims description 8
- 238000005275 alloying Methods 0.000 claims description 6
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 230000032683 aging Effects 0.000 claims description 4
- 229910052796 boron Inorganic materials 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000010955 niobium Substances 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 238000001746 injection moulding Methods 0.000 claims description 2
- 229910052758 niobium Inorganic materials 0.000 claims description 2
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000000470 constituent Substances 0.000 claims 4
- 239000012255 powdered metal Substances 0.000 claims 1
- 229910001092 metal group alloy Inorganic materials 0.000 abstract description 6
- 238000003892 spreading Methods 0.000 abstract description 5
- 238000000151 deposition Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000004873 anchoring Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- DJIIOVHYYDQKGR-UHFFFAOYSA-N [N].[Fe].[Ni].[Cr] Chemical compound [N].[Fe].[Ni].[Cr] DJIIOVHYYDQKGR-UHFFFAOYSA-N 0.000 description 1
- -1 chromium carbides Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- ZLANVVMKMCTKMT-UHFFFAOYSA-N methanidylidynevanadium(1+) Chemical class [V+]#[C-] ZLANVVMKMCTKMT-UHFFFAOYSA-N 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0006—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by the bolt material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
Definitions
- the invention relates to a method for producing a corrosion-resistant Steel existing expansion anchor with an expansion sleeve and an expansion body according to the preamble of claim 1.
- Expansion anchors made of corrosion-resistant steel with one over a part their length slotted expansion sleeve and an expansion cone Expansion body which can be driven into the expansion sleeve to anchor the expansion anchor, are well known.
- it can due to the high spreading pressure during the anchoring process to eat the both sliding surfaces of the expansion body and expansion sleeve come.
- This feeding significantly affects the function of the expansion anchor.
- On such anchor is particularly unsuitable for use in the pull zone because of a lack of expansion behavior does not compensate for a borehole expansion due to crack formation can be.
- one or both metal parts to be provided with a coating.
- a coating for example in the immersion process or Spraying applied coating is very thin and not very resistant. Accordingly, the coating can be scraped off during the anchoring process that the sliding behavior for re-spreading with a borehole expansion through Crack formation deteriorated considerably. Furthermore, such a coating neither does the long-term behavior of the expansion anchor with regard to post-expansion ensured.
- EP 0 154 600 describes a corrosion-resistant austenitic iron-chromium-nickel-nitrogen steel known for mechanically highly stressed components. To a high yield strength The nitrogen content is enriched by temperature treatment and subjected to a cold forming process after cooling. By a subsequent Aging annealing forms a fine-grained structure so that high yield strengths are reached become.
- the invention has for its object the manufacture of a corrosion-resistant Steel to allow existing expansion anchors, which permanently Favorable, the re-spreading with a borehole expansion possible by crack formation Sliding behavior is ensured.
- the original chromium content with the enriched non-metallic alloy components Increase starting material. This can either be the expansion sleeve or preferably the expansion body.
- the materials according to the invention can be processed using powder metallurgy generated and processed in the usual machining manufacturing processes become. However, it is also possible to remove the expansion body from the invention Manufacture material in a simple manner using the metal powder injection molding process. In this process, the precipitation-forming alloy elements are made of the basic composition has added metal powder. After hosing down the expansion body in an injection mold and debinding and The annealing annealing takes place in which the alloy components are sintered Carbon, nitrogen and / or boron in the form of carbides, nitrides and / or borides are excreted to achieve increased hardness.
- Basic composition of the alloy elements of a corrosion-resistant steel with the increased content of the precipitation-forming alloy components Basic composition Enrichment on C. 0.03 Si 0.5 Mn 18.2 S 0.003 Cr 18.5 Mon 2.3 N 0.15 N 0.9
- Nitrides are excreted.
- Vanadium carbides are excreted.
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
- Reinforcement Elements For Buildings (AREA)
- Piles And Underground Anchors (AREA)
- Earth Drilling (AREA)
- Clamps And Clips (AREA)
- Connection Of Plates (AREA)
- Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
- Dowels (AREA)
- Coating By Spraying Or Casting (AREA)
- Joining Of Building Structures In Genera (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Articles (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4445154 | 1994-12-17 | ||
| DE4445154A DE4445154A1 (de) | 1994-12-17 | 1994-12-17 | Verfahren zur Herstellung eines aus korrosionsbeständigem Stahl bestehenden Spreizankers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0721991A1 EP0721991A1 (de) | 1996-07-17 |
| EP0721991B1 true EP0721991B1 (de) | 2000-12-06 |
Family
ID=6536175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95116384A Expired - Lifetime EP0721991B1 (de) | 1994-12-17 | 1995-10-18 | Verfahren zur Herstellung eines aus korrosionsbeständigem Stahl bestehenden Spreizankers |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US5637158A (hu) |
| EP (1) | EP0721991B1 (hu) |
| JP (1) | JPH08232597A (hu) |
| CN (1) | CN1129292A (hu) |
| AT (1) | ATE197967T1 (hu) |
| BR (1) | BR9505930A (hu) |
| CZ (1) | CZ332695A3 (hu) |
| DE (2) | DE4445154A1 (hu) |
| ES (1) | ES2154312T3 (hu) |
| HU (1) | HUT73257A (hu) |
| NO (1) | NO955128L (hu) |
| PL (1) | PL311839A1 (hu) |
| RU (1) | RU2106428C1 (hu) |
| SK (1) | SK153195A3 (hu) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE50301870D1 (de) * | 2002-05-24 | 2006-01-12 | Gerhard Heying | Schwerlastdübel |
| DE102010063684A1 (de) * | 2010-12-21 | 2012-06-21 | Hilti Aktiengesellschaft | Befestigungsanker, insbesondere für mineralische Untergründe und Beton |
| CN102873503B (zh) * | 2011-07-12 | 2015-03-18 | 航天精工有限公司 | 一种高抗疲劳螺栓及其制作方法 |
| DE102012113053A1 (de) * | 2012-12-21 | 2014-06-26 | Thyssenkrupp Steel Europe Ag | Verbindungsmittel mit Formgedächtnis |
| CZ2015170A3 (cs) | 2015-03-10 | 2016-06-22 | Západočeská Univerzita V Plzni | Způsob výroby ledeburitických vysokolegovaných ocelí tepelným zpracováním |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4099993A (en) * | 1973-01-26 | 1978-07-11 | Hermann Muller | Process for producing an extremely hard mixed carbide layer on ferrous materials to increase their resistance to wear |
| DE3001503C2 (de) * | 1980-01-17 | 1984-04-12 | Teves-Thompson Gmbh, 3013 Barsinghausen | Verfahren zur Härtesteigerung von hochbelasteten Ventilsitzen für Verbrennungskraftmaschinen |
| JPS5872711A (ja) * | 1981-10-27 | 1983-04-30 | 有限会社新城製作所 | オ−ステナイト系ステンレス鋼からなるドリルねじ |
| DE3320460C1 (de) * | 1983-06-07 | 1984-10-18 | Thyssen Industrie Ag, 4300 Essen | Nachgiebiger Gebirgsanker |
| DE3407307A1 (de) * | 1984-02-24 | 1985-08-29 | Mannesmann AG, 4000 Düsseldorf | Verwendung einer korrosionsbestaendigen austenitischen eisen-chrom-nickel-stickstoff-legierung fuer mechanisch hoch beanspruchte bauteile |
| JP2786873B2 (ja) * | 1988-02-18 | 1998-08-13 | 三洋電機株式会社 | ピストンの製造方法 |
| JP2684736B2 (ja) * | 1988-12-27 | 1997-12-03 | 大同特殊鋼株式会社 | 粉末冷間工具鋼 |
| JPH06192737A (ja) * | 1991-03-22 | 1994-07-12 | Mitsubishi Motors Corp | 異種材料よりなる接合体の熱処理方法 |
| DE4115135C1 (hu) * | 1991-05-08 | 1992-02-27 | Degussa Ag, 6000 Frankfurt, De | |
| DE4200785A1 (de) * | 1992-01-14 | 1993-07-15 | Toge Duebel A Gerhard Gmbh | Spreizduebel |
| DE4225869C2 (de) * | 1992-08-05 | 1997-12-04 | Itw Befestigungssysteme | Dübel |
-
1994
- 1994-12-17 DE DE4445154A patent/DE4445154A1/de not_active Withdrawn
-
1995
- 1995-10-18 DE DE59508890T patent/DE59508890D1/de not_active Expired - Fee Related
- 1995-10-18 ES ES95116384T patent/ES2154312T3/es not_active Expired - Lifetime
- 1995-10-18 EP EP95116384A patent/EP0721991B1/de not_active Expired - Lifetime
- 1995-10-18 AT AT95116384T patent/ATE197967T1/de not_active IP Right Cessation
- 1995-11-14 HU HU9503265A patent/HUT73257A/hu unknown
- 1995-11-30 US US08/565,072 patent/US5637158A/en not_active Expired - Fee Related
- 1995-12-05 SK SK1531-95A patent/SK153195A3/sk unknown
- 1995-12-13 JP JP7324599A patent/JPH08232597A/ja active Pending
- 1995-12-14 PL PL95311839A patent/PL311839A1/xx unknown
- 1995-12-15 NO NO955128A patent/NO955128L/no unknown
- 1995-12-15 CZ CZ953326A patent/CZ332695A3/cs unknown
- 1995-12-15 RU RU95121099A patent/RU2106428C1/ru active
- 1995-12-15 BR BR9505930A patent/BR9505930A/pt not_active Application Discontinuation
- 1995-12-15 CN CN95118831A patent/CN1129292A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08232597A (ja) | 1996-09-10 |
| NO955128D0 (no) | 1995-12-15 |
| US5637158A (en) | 1997-06-10 |
| ES2154312T3 (es) | 2001-04-01 |
| CZ332695A3 (en) | 1997-04-16 |
| DE4445154A1 (de) | 1996-06-20 |
| BR9505930A (pt) | 1997-12-23 |
| HUT73257A (en) | 1996-07-29 |
| ATE197967T1 (de) | 2000-12-15 |
| RU2106428C1 (ru) | 1998-03-10 |
| SK153195A3 (en) | 1996-07-03 |
| PL311839A1 (en) | 1996-06-24 |
| HU9503265D0 (en) | 1996-01-29 |
| DE59508890D1 (de) | 2001-01-11 |
| CN1129292A (zh) | 1996-08-21 |
| NO955128L (no) | 1996-06-18 |
| EP0721991A1 (de) | 1996-07-17 |
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