JPH01148448A - Two layers centrifugal casting method - Google Patents
Two layers centrifugal casting methodInfo
- Publication number
- JPH01148448A JPH01148448A JP30802187A JP30802187A JPH01148448A JP H01148448 A JPH01148448 A JP H01148448A JP 30802187 A JP30802187 A JP 30802187A JP 30802187 A JP30802187 A JP 30802187A JP H01148448 A JPH01148448 A JP H01148448A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- carbon steel
- stainless steel
- binder
- centrifugal casting
- 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.)
- Pending
Links
- 238000009750 centrifugal casting Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims description 6
- 239000010935 stainless steel Substances 0.000 claims abstract description 17
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 17
- 229910000975 Carbon steel Inorganic materials 0.000 claims abstract description 16
- 239000010962 carbon steel Substances 0.000 claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 11
- 239000010410 layer Substances 0.000 claims abstract description 10
- 239000011230 binding agent Substances 0.000 claims abstract description 8
- 239000011247 coating layer Substances 0.000 claims abstract description 8
- 229920002472 Starch Polymers 0.000 claims abstract description 4
- 235000019698 starch Nutrition 0.000 claims abstract description 4
- 239000008107 starch Substances 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 235000013379 molasses Nutrition 0.000 claims abstract description 3
- 239000002184 metal Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000011863 silicon-based powder Substances 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 229910000278 bentonite Inorganic materials 0.000 abstract description 2
- 239000000440 bentonite Substances 0.000 abstract description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 229910000831 Steel Inorganic materials 0.000 abstract 2
- 239000010959 steel Substances 0.000 abstract 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 239000002344 surface layer Substances 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 238000005266 casting Methods 0.000 description 6
- 239000004615 ingredient Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 235000019353 potassium silicate Nutrition 0.000 description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は表面がステンレス鋼、内側が炭素鋼で形成され
た管を遠心鋳造成形する二層遠心鋳造法に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a two-layer centrifugal casting method for centrifugally casting a tube whose surface is made of stainless steel and whose inside is made of carbon steel.
（従来の技術及びその問題点）
耐食性が要求される雰囲気中で使用される配管には一般
的にステンレス管が使用されている。(Prior art and its problems) Stainless steel pipes are generally used for piping used in an atmosphere where corrosion resistance is required.
しかし、ステンレス管は高価であり、又、炭素鋼で形成
された管に比べて強度が不足するため、強度上の問題か
ら使用場所に制約を受けることがあった。However, stainless steel tubes are expensive and lack strength compared to tubes made of carbon steel, so there are restrictions on where they can be used due to strength issues.
（問題点を解決する為の手段）
本発明は、遠心鋳造法によれば、表面と内側の成分及び
特性の異なる管を容易に形成できることに着目し、炭素
鋼をステンレス鋼に変えるために添加せねばならない成
分を、予め遠心鋳用モールド内に塗布することにより、
表面がステンレス鋼、内側が炭素鋼からなる管を簡単に
形成出来る方法を明らかにし、以て、耐食性に優れ、安
価で且つ強度の高い管を提供することを目的とする。(Means for Solving the Problems) The present invention focuses on the fact that tubes with different surface and inner components and characteristics can be easily formed by centrifugal casting, and the present invention is based on the fact that tubes with different surface and inner components and characteristics can be easily formed. By applying the necessary ingredients into the centrifugal casting mold in advance,
The purpose of the present invention is to clarify a method for easily forming a tube whose surface is made of stainless steel and whose inside is made of carbon steel, thereby providing a tube with excellent corrosion resistance, low cost, and high strength.
本発明の二層遠心鋳造法は、遠心鋳造用モールド内に、
Ｃｒ、Ｎｉ、Ｓｉの何れか１種類、或はこれ等成分を任
意に組合わせて塗布して粉末塗装層を形成し、次で炭素
鋼の溶湯をモールド内に鋳込み、溶湯の高熱によって粉
末塗布層を溶融し、表面がステンレス鋼、内側が炭素鋼
で形成された二層管を形成する。In the two-layer centrifugal casting method of the present invention, in a centrifugal casting mold,
A powder coating layer is formed by coating one of Cr, Ni, and Si, or any combination of these components, and then molten carbon steel is poured into a mold, and powder coating is applied by the high heat of the molten metal. The layers are melted to form a two-layer tube with a stainless steel surface and carbon steel interior.
（作用及び効果）
表面だけがステンレス鋼で形成され、内側は炭素鋼に形
成されているから、炭素鋼の機械的強度を損なうことは
ない、しかもステンレス鋼の耐食性も兼ね具えている。(Functions and Effects) Since only the surface is made of stainless steel and the inside is made of carbon steel, it does not impair the mechanical strength of carbon steel and also has the corrosion resistance of stainless steel.
表面をステンレス鋼の層に形成するためには、炭素鋼を
ステンレス鋼に変えるために必要な成分をモールドに塗
布しておくだけでよく、製造コストは、通常のステンレ
ス管に比べて遥かに安価である。In order to form a layer of stainless steel on the surface, all you need to do is coat the mold with the ingredients necessary to change carbon steel to stainless steel, and the manufacturing cost is much lower than that of ordinary stainless steel pipes. It is.
（実施例）
第１図に示す如く、遠心鋳造モールド（１）の内面に塗
型（２）を形成する。塗型（２）は周知の如く、鋳造時
に溶湯がモールドに焼付くのを防止してモールドの保護
を画ると共に、鋳造された製品の取り出しを容易にする
ものである。(Example) As shown in FIG. 1, a coating mold (2) is formed on the inner surface of a centrifugal casting mold (1). As is well known, the coating mold (2) protects the mold by preventing the molten metal from sticking to the mold during casting, and also facilitates the removal of the cast product.
実施例の塗型（２）は、Ａ１□０５．５ｉ０２等の耐火
物をベントナイト等の粘結剤と混合したゾル状液を、モ
ールドを回転させながら噴射ノズルによって金型の内面
に約０．５〜２＋ｓｍの厚さに塗布し乾燥固化させて形
成されている。In the coating mold (2) of the example, a sol-like liquid made by mixing a refractory such as A1□05.5i02 with a binder such as bentonite is applied to the inner surface of the mold by a spray nozzle while rotating the mold. It is formed by applying it to a thickness of 5 to 2+sm and drying and solidifying it.
次に、炭素鋼をステンレス鋼に変えるために加えるべき
成分をバインダーに混ぜてモールドの内面に塗布する。Next, the ingredients that need to be added to convert carbon steel to stainless steel are mixed with a binder and applied to the inner surface of the mold.
実施例では澱粉の水溶き又は糖蜜にＣｒ、Ｎｉ、Ｓｉの
混合粉末を混ぜてゾル状液にし、これをモールドを回転
させながら噴射ノズルによって前記塗型材の上から厚さ
約０．５ｍｍに塗布する。In the example, a mixed powder of Cr, Ni, and Si is mixed with a water solution of starch or molasses to form a sol-like liquid, and this is applied to the coating material to a thickness of about 0.5 mm using a spray nozzle while rotating the mold. .
上記のＣｒ、Ｎｉ、Ｓｉの混合割合は、形成すべきステ
ンレス鋼の層の成分及びモールドに鋳込む溶湯の成分に
応じて選択するものであり、場合によっては、Ｃ「、Ｎ
ｉ、Ｓｉの何れか１種類だけ或は任意の２種類を組み合
せて用いることもある。The above mixing ratio of Cr, Ni, and Si is selected depending on the composition of the stainless steel layer to be formed and the composition of the molten metal to be cast into the mold.
Either one type of i or Si may be used alone, or any two types may be used in combination.
次に炭素鋼の溶湯を注湯樋（４）からモールド内に鋳込
む。Next, molten carbon steel is poured into the mold from the pouring gutter (4).
溶湯の高温がＣｒ、Ｎｉ、Ｓｉの塗布層（３〉を溶融し
、Ｃｒ、Ｎｉ、Ｓｉを溶湯に溶は込ませると共に、バイ
ンダーを燃焼消失させる。The high temperature of the molten metal melts the coating layer (3) of Cr, Ni, and Si, causing the Cr, Ni, and Si to melt into the molten metal, and burns off the binder.
このとき、溶湯の温度が高過ぎるとＣｒ、Ｎｉ、Ｓｉが
、形成される管の全肉に亘って拡散するので鋳込み温度
は１６００°以下にする。At this time, if the temperature of the molten metal is too high, Cr, Ni, and Si will diffuse over the entire wall of the tube to be formed, so the casting temperature is set to 1600° or less.
尚、水ガラスをバインダーとしてＣｒ、 Ｎｉ、 Ｓｉ
の粉末をモールドに塗布することも出来る。In addition, using water glass as a binder, Cr, Ni, Si
It is also possible to apply powder to the mold.
この場合、水ガラスは完全に燃焼消失することはなく、
水ガラスの成分は鋳造製品の表面４こ僅か残存するが、
製品の使用には支障はない。In this case, the water glass will not completely burn and disappear;
The components of water glass remain on the surface of the cast product, but
There is no problem in using the product.
ｌ１匠
鋳造品
全長３０００−輪、外径１００１ＩＩ、内径）０＋＊ｍ
の管Ｃｒ、 Ｎｉ、 Ｓｉの粉末の塗布
Ｃ「６５％、Ｎｉ３３％、Ｓｉ２％を混合した粉末３０
に、を澱粉の水溶き７０Ｉｌに混合して塗型材上に塗布
この時の金型の回転数１１０００ｒｐ
溶湯の鋳込み
溶湯の成分
ｃ ｏ、ｏａ％、Ｓ ｉｏ、５％、Ｍｎ０．５％、ｐ
ｏ、ｏｉ％、Ｓｏ、０１％
鋳込み温度
１６００℃
上記の結果、表面が５ＵＳ３０４に匹敵するステンレス
鋼層、内側が低炭素鋼である管を得た。l1 Artisan casting product Total length 3000-wheel, outer diameter 1001II, inner diameter) 0+*m
Application of Powder of Cr, Ni, and Si in Pipe C "30% Powder Mixed with 65% Ni, 33% Ni, and 2% Si
Then, mix with 70 Il of starch in water and apply on the coating material.The rotation speed of the mold at this time is 11000 rpm.Pouring of the molten metal.Components of the molten metal: co, oa%, Sio, 5%, Mn0.5%, p.
o, oi%, So, 01% Casting temperature 1600° C. As a result of the above, a tube was obtained whose surface was made of stainless steel layer comparable to 5US304 and whose inner side was made of low carbon steel.
本発明は上記実施例の構成に限定されることはなく、特
許請求の範囲に記載の範囲で種類々の変形が可能である
。The present invention is not limited to the configuration of the above embodiments, and various modifications can be made within the scope of the claims.
第１図は鋳込み状態を示すモールドの断面図である。
（１）・・・モールド （２）・・・塗 型（３）
・・・粉末塗布層FIG. 1 is a sectional view of the mold showing the casting state. (1)...Mold (2)...Painting mold (3)
...Powder coating layer
Claims (2)
加えなければならない、Ｃｒ、Ｎｉ、Ｓｉの粉末の何れ
か１種類、或は任意に組合わせて遠心鋳造モールドの内
面に塗布して粉末塗装層を形成し、次で炭素鋼の溶湯を
モールド内に鋳込み、溶湯の高熱によって前記粉末塗布
層を溶融し、表面がステンレス鋼、内側が炭素鋼で形成
された二層管を形成する二層遠心鋳造法。(1) To convert the carbon steel to be cast into stainless steel, one or any combination of Cr, Ni, and Si powders must be added and applied to the inner surface of the centrifugal casting mold. A coating layer is formed, and then a molten carbon steel is poured into a mold, and the powder coating layer is melted by the high heat of the molten metal, forming a two-layered tube with a stainless steel surface and a carbon steel interior. Layer centrifugal casting method.
糖蜜をバインダーとしてモールドに塗布されている特許
請求の範囲第１項に記載の二層遠心鋳造法。(2) The two-layer centrifugal casting method according to claim 1, wherein the powders of Cr, Ni, and Si are applied to the mold using starch dissolved in water or molasses as a binder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30802187A JPH01148448A (en) | 1987-12-04 | 1987-12-04 | Two layers centrifugal casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30802187A JPH01148448A (en) | 1987-12-04 | 1987-12-04 | Two layers centrifugal casting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01148448A true JPH01148448A (en) | 1989-06-09 |
Family
ID=17975931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30802187A Pending JPH01148448A (en) | 1987-12-04 | 1987-12-04 | Two layers centrifugal casting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01148448A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861994A (en) * | 2013-12-23 | 2014-06-18 | 宁波钰烯阴极保护材料有限责任公司 | Coating for producing tubular high-silicon cast iron positive electrode and preparation method of coating |
| CN104703873A (en) * | 2012-10-05 | 2015-06-10 | Kme德国有限及两合公司 | Landing stage for a boat |
| CN105543710A (en) * | 2015-12-26 | 2016-05-04 | 首钢总公司 | Carbon steel and martensitic stainless steel clad steel plate and production method thereof |
| CN108372281A (en) * | 2018-03-28 | 2018-08-07 | 北京鼎翰科技有限公司 | A kind of tubing casting method based on stainless steel and carbon steel bimetallic mixed liquor |
| CN113426976A (en) * | 2021-04-10 | 2021-09-24 | 桂林理工大学 | Crack control method for bimetal composite pipe |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS583746A (en) * | 1981-06-26 | 1983-01-10 | Mitsubishi Heavy Ind Ltd | Alloying material for surface layer of casting |
-
1987
- 1987-12-04 JP JP30802187A patent/JPH01148448A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS583746A (en) * | 1981-06-26 | 1983-01-10 | Mitsubishi Heavy Ind Ltd | Alloying material for surface layer of casting |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104703873A (en) * | 2012-10-05 | 2015-06-10 | Kme德国有限及两合公司 | Landing stage for a boat |
| US20150274268A1 (en) * | 2012-10-05 | 2015-10-01 | Kme Germany Gmbh & Co. Kg | Boat launch |
| JP2015535772A (en) * | 2012-10-05 | 2015-12-17 | ケイエムイー・ジャーマニー・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング・ウント・コンパニー・コマンデイトゲゼルシャフト | Boat berthing equipment |
| US9434457B2 (en) * | 2012-10-05 | 2016-09-06 | Kme Germany Gmbh & Co. Kg | Boat launch |
| CN103861994A (en) * | 2013-12-23 | 2014-06-18 | 宁波钰烯阴极保护材料有限责任公司 | Coating for producing tubular high-silicon cast iron positive electrode and preparation method of coating |
| CN105543710A (en) * | 2015-12-26 | 2016-05-04 | 首钢总公司 | Carbon steel and martensitic stainless steel clad steel plate and production method thereof |
| CN108372281A (en) * | 2018-03-28 | 2018-08-07 | 北京鼎翰科技有限公司 | A kind of tubing casting method based on stainless steel and carbon steel bimetallic mixed liquor |
| CN113426976A (en) * | 2021-04-10 | 2021-09-24 | 桂林理工大学 | Crack control method for bimetal composite pipe |
| CN113426976B (en) * | 2021-04-10 | 2022-08-09 | 桂林理工大学 | Crack control method for bimetal composite pipe |
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