EP0684883B1 - Verfahren zur herstellung eines einteiligen leichtmetallrades aus einem aluminium-knetwerkstoff - Google Patents
Verfahren zur herstellung eines einteiligen leichtmetallrades aus einem aluminium-knetwerkstoff Download PDFInfo
- Publication number
- EP0684883B1 EP0684883B1 EP94904966A EP94904966A EP0684883B1 EP 0684883 B1 EP0684883 B1 EP 0684883B1 EP 94904966 A EP94904966 A EP 94904966A EP 94904966 A EP94904966 A EP 94904966A EP 0684883 B1 EP0684883 B1 EP 0684883B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blank
- alloy
- rolling
- light metal
- metal wheel
- 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
- 238000000034 method Methods 0.000 title claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 7
- 239000002184 metal Substances 0.000 title claims abstract description 7
- 239000004411 aluminium Substances 0.000 title claims abstract 3
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract 3
- 238000004519 manufacturing process Methods 0.000 title abstract description 3
- 239000000463 material Substances 0.000 title abstract description 3
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 14
- 239000000956 alloy Substances 0.000 claims abstract description 14
- 238000005096 rolling process Methods 0.000 claims abstract description 13
- 238000010791 quenching Methods 0.000 claims description 11
- 230000000171 quenching effect Effects 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000003483 aging Methods 0.000 claims 1
- 239000007795 chemical reaction product Substances 0.000 claims 1
- 238000001816 cooling Methods 0.000 claims 1
- 239000000047 product Substances 0.000 claims 1
- 238000000137 annealing Methods 0.000 description 7
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/26—Making other particular articles wheels or the like
- B21D53/264—Making other particular articles wheels or the like wheels out of a single piece
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/26—Making other particular articles wheels or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
- B21H1/10—Making articles shaped as bodies of revolution rings of restricted axial length rims for pneumatic tyres
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/05—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
Definitions
- the invention relates to a method for producing a one-piece light metal wheel from a hardenable wrought aluminum alloy by flow pressing or rolling from a blank, in which the flow pressing or rolling to the finished product is carried out in the hot state and in which solution annealing at temperatures of approximately 530 ° C. is dependent of the alloy type with subsequent quenching and heat hardening at 150 ° to 200 ° C, and in particular its use for producing a one-piece light metal wheel from an alloy of the type AlMgSi.
- the blanks are heated to a temperature range of 150 ° to 250 ° C. in a known method. After completion, solution annealing takes place at temperatures of around 530 ° C depending on the type of alloy and heat hardening at 150 ° to 200 ° C.
- the purpose of the invention is to largely avoid warping of the finished rolled part and to reduce the energy expenditure in a method of the type mentioned at the beginning.
- This object of the invention is achieved with a method of the type mentioned, which is characterized in that, after solution annealing, the blank is quenched in a controlled manner to about 200 ° C., depending on the type of alloy, flow-pressed or rolled at this temperature, avoiding excessive heating, to the finished product and then heat-cured .
- the controlled quenching of the unwrought blank from the solution annealing process, depending on the alloy type, to around 200 ° C and the subsequent finish rolling largely avoid warping of the finished part, which was caused by quenching and subsequent turning.
- the controlled quenching of the blank, depending on the type of alloy to a temperature of approximately 200 ° C., compared to the known process in which the reheating of ambient temperature, energy savings of considerable kind are achieved.
- the blank is split and then flow pressed or rolled into a finished product.
- the rolling out of the blank after the controlled quenching from the solution annealing temperature also leads to improved material structure and thus to improved use properties.
- the heat curing then takes place in a known manner.
- the invention also includes the proposal to carry out quenching after solution annealing with a high quenching rate using water showers with a defined amount of water and water temperature. Good mechanical properties are achieved in this way. However, it is also possible to quench several blanks in suitable racks using appropriate water sprinkling.
- Such a method is preferably used to produce a one-piece light metal wheel from an alloy of the AlMgSi type.
- the so-called turning allowance for the rim base can be significantly reduced. Concentricity and imbalance are reduced.
Landscapes
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Forging (AREA)
- Heat Treatment Of Articles (AREA)
- Metal Rolling (AREA)
- Heat Treatment Of Steel (AREA)
- Braking Arrangements (AREA)
- Extrusion Of Metal (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4305091A DE4305091C1 (de) | 1993-02-19 | 1993-02-19 | Verfahren zur Herstellung eines einteiligen Leichtmetallrades aus einem Aluminium-Knetwerkstoff |
DE4305091 | 1993-02-19 | ||
PCT/DE1994/000063 WO1994019127A1 (de) | 1993-02-19 | 1994-01-22 | Verfahren zur herstellung eines einteiligen leichtmetallrades aus einem aluminium-knetwerkstoff |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0684883A1 EP0684883A1 (de) | 1995-12-06 |
EP0684883B1 true EP0684883B1 (de) | 1997-04-02 |
Family
ID=6480842
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94904966A Expired - Lifetime EP0684883B1 (de) | 1993-02-19 | 1994-01-22 | Verfahren zur herstellung eines einteiligen leichtmetallrades aus einem aluminium-knetwerkstoff |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP0684883B1 (cs) |
JP (1) | JPH08505660A (cs) |
KR (1) | KR0178603B1 (cs) |
AT (1) | ATE150992T1 (cs) |
AU (1) | AU5878894A (cs) |
CZ (1) | CZ292222B6 (cs) |
DE (1) | DE4305091C1 (cs) |
HU (1) | HU212741B (cs) |
NO (1) | NO301109B1 (cs) |
SK (1) | SK279051B6 (cs) |
WO (1) | WO1994019127A1 (cs) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8496764B2 (en) | 2011-12-01 | 2013-07-30 | Ford Global Technologies, Llc | System and method for manufacturing an F-temper 7xxx series aluminum alloy |
US9757784B2 (en) | 2015-03-10 | 2017-09-12 | Ford Global Technologies, Llc | Temperature measurement device for metal sheet |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2295341A (en) * | 1994-11-25 | 1996-05-29 | Asahi Tec Corp | Method for spinning vehicle wheel |
DE19503620C2 (de) * | 1995-02-03 | 1998-07-16 | Daimler Benz Aerospace Ag | Verfahren zum Umformen eines plattenförmigen Bauteils |
DE19824978B4 (de) * | 1998-06-04 | 2007-07-05 | Volkswagen Ag | Verfahren zum Aushärten von Aluminiumbauteilen einer Fahrzeugkarosserie oder einer Fahrzeugkarosseriebaugruppe |
HU226904B1 (en) * | 1999-02-12 | 2010-01-28 | Norsk Hydro As | Aluminium alloy containing magnesium and silicon |
DE19909519B4 (de) * | 1999-03-04 | 2006-06-08 | Leifeld Metal Spinning Gmbh | Verfahren zur Herstellung eines Leichtmetallrades |
DE10043562C2 (de) * | 1999-09-16 | 2003-09-18 | Honsel Profilprodukte Gmbh | Verfahren zur Wärmebehandlung von Strangpreßprofilen |
DE10141510A1 (de) * | 2001-08-24 | 2003-03-13 | Audi Ag | Verfahren zum Herstellen von Leichtmetall-Felgen |
DE10330400A1 (de) * | 2003-07-04 | 2005-01-20 | Alutec-Belte Ag | Verfahren und Vorrichtung zum Abschrecken eines Gussteils |
WO2012084177A1 (en) * | 2010-12-23 | 2012-06-28 | Tata Steel Nederland Technology B.V. | Method of manufacturing a metal vehicle wheel and vehicle wheel |
DE102011102848B4 (de) * | 2011-05-30 | 2021-11-18 | Audi Ag | Verfahren zur Herstellung eines Radsterns eines einteiligen Leichtmetall-Fahrzeugrades |
JP6099475B2 (ja) * | 2013-05-01 | 2017-03-22 | 本田技研工業株式会社 | Al−Mg−Si系合金部材およびその製造方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4579604A (en) * | 1982-07-08 | 1986-04-01 | Ni Industries, Inc. | Method of spin forging a finished article |
DE3443207C1 (de) * | 1984-11-27 | 1985-09-12 | Årdal og Sunndal Verk A/S, Oslo | Verfahren zum Ausrichten von Fahrzeugraedern |
JP2627741B2 (ja) * | 1986-08-28 | 1997-07-09 | 旭テック株式会社 | 車両用ホイールの製造法 |
JPH01233031A (ja) * | 1988-03-14 | 1989-09-18 | Kobe Steel Ltd | 車輪の製造方法 |
JPH05287467A (ja) * | 1992-04-03 | 1993-11-02 | Asahi Tec Corp | Al合金製スピニング成形品の製造方法 |
-
1993
- 1993-02-19 DE DE4305091A patent/DE4305091C1/de not_active Expired - Fee Related
-
1994
- 1994-01-22 AT AT94904966T patent/ATE150992T1/de active
- 1994-01-22 HU HU9502444A patent/HU212741B/hu not_active IP Right Cessation
- 1994-01-22 SK SK1018-95A patent/SK279051B6/sk unknown
- 1994-01-22 CZ CZ19952070A patent/CZ292222B6/cs not_active IP Right Cessation
- 1994-01-22 WO PCT/DE1994/000063 patent/WO1994019127A1/de active IP Right Grant
- 1994-01-22 KR KR1019950703462A patent/KR0178603B1/ko not_active IP Right Cessation
- 1994-01-22 AU AU58788/94A patent/AU5878894A/en not_active Abandoned
- 1994-01-22 JP JP6518528A patent/JPH08505660A/ja active Pending
- 1994-01-22 EP EP94904966A patent/EP0684883B1/de not_active Expired - Lifetime
-
1995
- 1995-06-01 NO NO952166A patent/NO301109B1/no unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8496764B2 (en) | 2011-12-01 | 2013-07-30 | Ford Global Technologies, Llc | System and method for manufacturing an F-temper 7xxx series aluminum alloy |
US9757784B2 (en) | 2015-03-10 | 2017-09-12 | Ford Global Technologies, Llc | Temperature measurement device for metal sheet |
Also Published As
Publication number | Publication date |
---|---|
CZ292222B6 (cs) | 2003-08-13 |
KR960700838A (ko) | 1996-02-24 |
SK279051B6 (sk) | 1998-06-03 |
NO952166D0 (no) | 1995-06-01 |
NO301109B1 (no) | 1997-09-15 |
ATE150992T1 (de) | 1997-04-15 |
HUT71759A (en) | 1996-01-29 |
SK101895A3 (en) | 1997-06-04 |
WO1994019127A1 (de) | 1994-09-01 |
EP0684883A1 (de) | 1995-12-06 |
HU212741B (en) | 1996-10-28 |
CZ207095A3 (en) | 1996-03-13 |
AU5878894A (en) | 1994-09-14 |
DE4305091C1 (de) | 1994-03-10 |
JPH08505660A (ja) | 1996-06-18 |
HU9502444D0 (en) | 1995-10-30 |
NO952166L (no) | 1995-06-16 |
KR0178603B1 (ko) | 1999-02-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0684883B1 (de) | Verfahren zur herstellung eines einteiligen leichtmetallrades aus einem aluminium-knetwerkstoff | |
DE69520007D1 (de) | Wärmebehandlungsverfahren für blech aus aluminium-legierung | |
DE102011105447B4 (de) | Verfahren zur Herstellung von Aluminium-Druckgussteilen | |
US2400866A (en) | Method of drawing metal stock | |
EP1020540A1 (de) | Verfahren zur Herstellung von Gussteilen aus Aluminiumlegierrungen | |
JPS55104431A (en) | Production of cold rolled steel plate for deep drawing by short-time continuous annealing | |
EP0307386A1 (de) | Verfahren zur Herstellung einer Titanlegierung und Verwendung einer Sprüheinrichtung zur Durchführung des Verfahrens | |
DE4007487A1 (de) | Verfahren zur herstellung von maschinenelementen aus stahl | |
EP2096187A1 (de) | Verfahren zum gleichzeitigen Wärmebehandeln und Beschichten eines Aluminiumbauteils sowie nach dem Verfahren hergestelltes Bauteil | |
US3459599A (en) | Method of thermomechanically annealing steel | |
DE2601067A1 (de) | Verfahren zum feuertauchbad-aluminieren von kompakten erzeugnissen aus eisenlegierungen | |
DE3623105C1 (de) | Verfahren zur Waermebehandlung von Stahlteilen | |
EP0413163B1 (de) | Verfahren und Anlage zur Herstellung von thermomechanisch behandeltem Walzgut aus Stahl | |
SU1211313A1 (ru) | Способ изготовлени цельнокатаных железнодорожных колес | |
DE2332213C3 (de) | Verfahren zur thermochemischen Behandlung von Erzeugnissen aus Gußeisen | |
DE879554C (de) | Verfahren zur Verbesserung der Festigkeitseigenschaften nitrierter Werkstuecke | |
DE843423C (de) | Walze, insbesondere Kaltwalze und Verfahren zu ihrer Herstellung | |
AT158620B (de) | Verfahren zum Härten von profilierten Teilen. | |
JPS59145734A (ja) | 引張強さ70kg/mm↑2以上の高張力ボルト製造法 | |
DE2107941C3 (cs) | ||
AT213075B (de) | Verfahren zur Herstellung von lackierten, dünnen Aluminiumblechen mit hoher mechanischer Festigkeit | |
CH376277A (de) | Verfahren zur Herstellung von lackierten, dünnen Aluminiumblechen mit hoher mechanischer Festigkeit | |
DE2519444C3 (de) | Verfahren zur Erhöhung der Festigkeit und Zähigkeit von Gußstucken | |
DE914669C (de) | Verfahren zum Formen von Glasgegenstaenden | |
SU945226A1 (ru) | Способ термомеханической обработки сплавов на основе магни |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19950415 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DK ES FR GB GR IE IT LI LU MC NL PT SE |
|
17Q | First examination report despatched |
Effective date: 19960328 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DK ES FR GB GR IE IT LI LU MC NL PT SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Effective date: 19970402 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19970402 Ref country code: ES Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19970402 Ref country code: DK Effective date: 19970402 |
|
REF | Corresponds to: |
Ref document number: 150992 Country of ref document: AT Date of ref document: 19970415 Kind code of ref document: T |
|
ITF | It: translation for a ep patent filed | ||
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19970403 |
|
ET | Fr: translation filed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19970702 Ref country code: PT Effective date: 19970702 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: 73055 |
|
NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980122 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980122 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980131 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980131 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980330 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D Ref document number: 73055 Country of ref document: IE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980731 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20041108 Year of fee payment: 12 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20050119 Year of fee payment: 12 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20050125 Year of fee payment: 12 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060122 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060131 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060131 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20060131 Year of fee payment: 13 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20060122 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20060929 |
|
BERE | Be: lapsed |
Owner name: FIRMA OTTO *FUCHS Effective date: 20060131 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070122 |