JPH0450130B2 - - Google Patents
Info
- Publication number
- JPH0450130B2 JPH0450130B2 JP59102718A JP10271884A JPH0450130B2 JP H0450130 B2 JPH0450130 B2 JP H0450130B2 JP 59102718 A JP59102718 A JP 59102718A JP 10271884 A JP10271884 A JP 10271884A JP H0450130 B2 JPH0450130 B2 JP H0450130B2
- Authority
- JP
- Japan
- Prior art keywords
- hot
- titanium
- rolled
- abrasive
- belt
- 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
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 11
- 229910052719 titanium Inorganic materials 0.000 claims description 11
- 239000010936 titanium Substances 0.000 claims description 11
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 8
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 7
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 229910017604 nitric acid Inorganic materials 0.000 claims description 6
- 238000005554 pickling Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 4
- 238000004381 surface treatment Methods 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 238000005098 hot rolling Methods 0.000 description 10
- 230000007547 defect Effects 0.000 description 8
- 239000003082 abrasive agent Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000005452 bending Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000002335 surface treatment layer Substances 0.000 description 2
- 241000237502 Ostreidae Species 0.000 description 1
- 238000005270 abrasive blasting Methods 0.000 description 1
- 239000006061 abrasive grain Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 235000020636 oyster Nutrition 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P9/00—Treating or finishing surfaces mechanically, with or without calibrating, primarily to resist wear or impact, e.g. smoothing or roughening turbine blades or bearings; Features of such surfaces not otherwise provided for, their treatment being unspecified
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はチタン又はチタン合金の熱延製品の製
造において熱延疵を除去する表面処理法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a surface treatment method for removing hot rolling defects in the production of hot rolled products of titanium or titanium alloys.
従来、チタン又はチタン合金の熱延製品の製造
において熱延疵除去のためにはベルトグラインダ
ーで機械的に研削除去する方法が一般に行われて
いた。
Conventionally, in the production of hot-rolled titanium or titanium alloy products, hot-rolling defects have generally been removed by mechanical grinding using a belt grinder.
しかしこのような表面処理を行つたチタン又は
チタン合金の熱延製品に曲げ成形などの加工を行
うとベルト研削目を起点として、割れが発するこ
とがあり問題であつた。また、熱間圧延工程にお
いてチタン材のマトリツクスに楔状にくい込んだ
スケールを除去するために、研削材を高圧液体中
に混入して湿式ノズルよりチタン材の表面に打ち
つけ、チタン表面を研削する表面処理方法が特開
昭51−189370号公報により知られている。しかし
この方法では熱間圧延工程において発生したとび
込み、カキ疵などの熱延疵などの除去することが
困難であり、疵が除去できたとしても表面加工層
が生じ、これが原因で製品加工時に割れが生じた
り、さらに研削痕にムラを生じたり、平滑均一な
表面が得られないといつた問題がある。 However, when a hot-rolled titanium or titanium alloy product subjected to such surface treatment is subjected to processing such as bending, cracks may occur starting from the belt grinding marks, which is a problem. In addition, in order to remove the wedge-shaped scale embedded in the matrix of titanium material during the hot rolling process, abrasive material is mixed into high-pressure liquid and applied to the surface of the titanium material using a wet nozzle, resulting in a surface treatment in which the surface of the titanium material is ground. A method is known from JP-A-51-189370. However, with this method, it is difficult to remove hot-rolling flaws such as break-in and oyster flaws that occur during the hot rolling process, and even if the flaws can be removed, a surface treatment layer is created, which causes defects during product processing. There are problems such as cracking, uneven grinding marks, and inability to obtain a smooth and uniform surface.
本発明はチタン又はチタン合金の熱延製品の熱
延疵を除去し、平滑かつ均一な表面を得ることを
目的とする。
The object of the present invention is to remove hot-rolling defects from hot-rolled titanium or titanium alloy products and to obtain a smooth and uniform surface.
〔問題点を解決するための手段、作用〕
本発明は熱延製品表面の熱延疵をまずベルトグ
ラインダーにより全面均一に機械的に除去する。
この時表面は第１図−ａの様にベルト目が表面に
存在し凹凸のはげしい鋭角状表面状態にある。こ
の後研掃材を混入した高圧液体を投射することに
より前記鋭角状の凹凸を第１図−ｂのようになめ
らかな純角状の凹凸の表面状態にする。さらに、
この表面に硝酸と弗酸の混合水溶液による酸洗を
行うことにより溶削し、第１図−ｃのようになめ
らかな均一表面とする。酸洗はスプレーにより行
うのが好ましい。[Means and operations for solving the problems] In the present invention, hot rolling defects on the surface of a hot rolled product are first mechanically removed uniformly over the entire surface using a belt grinder.
At this time, as shown in FIG. 1-a, the surface has belt marks on the surface and is in an acute-angled surface state with severe irregularities. Thereafter, by projecting a high-pressure liquid mixed with an abrasive material, the acute-angled irregularities are transformed into smooth pure square irregularities as shown in FIG. 1-b. moreover,
This surface is pickled with a mixed aqueous solution of nitric acid and hydrofluoric acid, and then melted to create a smooth and uniform surface as shown in FIG. 1-c. Pickling is preferably carried out by spraying.
各工程における好ましい条件は、
ベルトグラインダー：ベルト砥粒粒度＃80〜
＃320
研掃材投射研掃材混入割合 40〜60vol％
投射圧力 100〜115Kg／cm2
酸洗濃度 硝酸 150〜200gr／
弗酸 10〜30gr／
スプレー温度 20〜50℃
である。 The preferred conditions for each process are as follows: Belt grinder: Belt abrasive grain size #80~
#320 Abrasive material projection Abrasive material mixing ratio 40-60vol% Projection pressure 100-115Kg/cm 2 Pickling concentration Nitric acid 150-200gr/Hydrofluoric acid 10-30gr/Spray temperature 20-50℃.
熱間圧延されたチタンホツトコイルを焼鈍酸洗
しつぎの条件により処理して熱延疵を除去した。
A hot rolled titanium hot coil was annealed and pickled and treated under the following conditions to remove hot rolling defects.
(1)ベルトグラインダー：ベルト砥粒粒度＃80
(2)研掃材投射研掃材混合割合 55vol％
投射圧力 110Kg／cm2
(3)酸洗濃度 硝酸 200gr／
硝酸 30gr／
温度 25℃
スプレー圧力 １Kg／cm2
スプレー時間 30秒
得られた熱延製品を曲げ加工（曲げ角度：
180°、曲げ内半径：板厚の２倍）した結果、割れ
発生は皆無であつた。(1) Belt grinder: Belt abrasive particle size #80 (2) Abrasive material projection Abrasive material mixing ratio 55vol% Projection pressure 110Kg/cm 2 (3) Pickling concentration Nitric acid 200gr/ Nitric acid 30gr/ Temperature 25℃ Spray pressure 1Kg / cm2 Spray time: 30 seconds The obtained hot-rolled product is bent (bending angle:
180°, bending inner radius: twice the plate thickness), and as a result, no cracks occurred.
本発明の処理を行つて製造したチタン又はチタ
ン合金の熱延製品は表面が平滑かつ均一であると
ともに、ベルトグラインダーおよび研掃材投射に
よる表面の加工層がスプレー酸洗で除去されてい
るため加工時に割れることはない。
The hot-rolled titanium or titanium alloy products produced by the treatment of the present invention have smooth and uniform surfaces, and the surface treatment layer created by the belt grinder and abrasive blasting has been removed by spray pickling. It never breaks.
従来熱延疵の発生したホツトコイルでは熱延製
品の製造は不可能であつたが、本発明により熱延
疵の発生したホツトコイルの救済が可能となり素
材ホツトコイルの所要量が減少でき素材投入歩留
（熱延製品重量／素材ホツトコイル重量）が向上
した。 Conventionally, it was impossible to manufacture hot-rolled products using hot coils with hot-rolling defects, but the present invention makes it possible to repair hot-rolled coils with hot-rolling defects, reduces the amount of raw material hot coils required, and improves material input yield ( The weight of the hot-rolled product/weight of the hot coil material has improved.
第１図は本発明法による材料表面の変化を示す
模式図で、ａはベルトグラインダー後、ｂは研掃
材混入高圧液体投射後、ｃは硝酸と弗酸の混合水
溶液スプレー酸洗後の状態を示す。
Figure 1 is a schematic diagram showing changes in the surface of a material according to the method of the present invention, in which a shows the state after belt grinding, b shows the state after spraying high-pressure liquid mixed with an abrasive, and c shows the state after pickling by spraying a mixed aqueous solution of nitric acid and hydrofluoric acid. shows.
Claims (1)
インダーで研削し、研掃材を混入した高圧液体を
投射し、ついで硝酸と弗酸の混合水溶液で酸洗す
ることを特徴とするチタン又はチタン合金板の表
面処理方法。1. A titanium or titanium alloy plate characterized by grinding a hot-rolled titanium or titanium alloy plate with a belt grinder, projecting a high-pressure liquid mixed with an abrasive, and then pickling with a mixed aqueous solution of nitric acid and hydrofluoric acid. surface treatment method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10271884A JPS60249535A (en) | 1984-05-23 | 1984-05-23 | Surface treatment for titanium or titanium alloy plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10271884A JPS60249535A (en) | 1984-05-23 | 1984-05-23 | Surface treatment for titanium or titanium alloy plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60249535A JPS60249535A (en) | 1985-12-10 |
| JPH0450130B2 true JPH0450130B2 (en) | 1992-08-13 |
Family
ID=14335042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10271884A Granted JPS60249535A (en) | 1984-05-23 | 1984-05-23 | Surface treatment for titanium or titanium alloy plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60249535A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62280353A (en) * | 1986-05-28 | 1987-12-05 | Nippon Steel Corp | Method for descaling titanium and titanium alloy material |
| US6232573B1 (en) * | 1997-12-24 | 2001-05-15 | Nkk Corporation | Titanium alloy sheet and production method thereof |
| JP2007180399A (en) * | 2005-12-28 | 2007-07-12 | Dowa Holdings Co Ltd | Metal-ceramics circuit board and manufacturing method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5118937A (en) * | 1974-08-07 | 1976-02-14 | Kobe Steel Ltd | Chitanzaino hyomenshorihoho |
| JPS51128643A (en) * | 1975-04-30 | 1976-11-09 | Kobe Steel Ltd | Method of treating surface of titanium material |
| JPS56156799A (en) * | 1980-05-01 | 1981-12-03 | Kobe Steel Ltd | Descaling method for titanium sheet |
-
1984
- 1984-05-23 JP JP10271884A patent/JPS60249535A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5118937A (en) * | 1974-08-07 | 1976-02-14 | Kobe Steel Ltd | Chitanzaino hyomenshorihoho |
| JPS51128643A (en) * | 1975-04-30 | 1976-11-09 | Kobe Steel Ltd | Method of treating surface of titanium material |
| JPS56156799A (en) * | 1980-05-01 | 1981-12-03 | Kobe Steel Ltd | Descaling method for titanium sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60249535A (en) | 1985-12-10 |
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