JPS61106777A - Corrosion resistant cast product - Google Patents
Corrosion resistant cast productInfo
- Publication number
- JPS61106777A JPS61106777A JP22778384A JP22778384A JPS61106777A JP S61106777 A JPS61106777 A JP S61106777A JP 22778384 A JP22778384 A JP 22778384A JP 22778384 A JP22778384 A JP 22778384A JP S61106777 A JPS61106777 A JP S61106777A
- Authority
- JP
- Japan
- Prior art keywords
- 3sio2
- na2o
- product
- corrosion resistance
- superior
- 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
Landscapes
- Paints Or Removers (AREA)
- Glass Compositions (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、例えは舶用ディーゼル機関用過胎愼ケーシン
グといつ罠鋳物が用いられた製品における硫酸耐蝕性の
尚められた耐蝕性鋳物製品に関すゐものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a corrosion-resistant cast product with improved sulfuric acid corrosion resistance, for example, a superfluid casing for a marine diesel engine and a product using trap casting. It's about.
便米より、例えば舶用ディーゼル機関用過坩機ゲージン
グは、硫酸による腐蝕を防止する為に、ニッケルメッキ
を施すことが提案でれている。For example, it has been proposed to apply nickel plating to the gauging of a crusher for a marine diesel engine to prevent corrosion caused by sulfuric acid.
つ1υ、船舶の燃料としてコスト面より億貢の含有量の
萬い低質な重油が用いられていることよシ、そして排気
ガス金海水めるいは清水で冷却している為、含Mされて
いる硫黄分より硫酸が生成し、この硫酸によって本体で
るる鋳物表面が侵されて腐蝕が起きるのを防止しょうと
して、鋳物表面にニッケルメッキを厖しているのでろゐ
。One reason is that low-quality heavy oil with a content of 1,000,000 million yen is used as fuel for ships due to cost considerations, and because the exhaust gas is cooled with gold sea water or fresh water, it contains M. Sulfuric acid is produced from the sulfur content, and the surface of the casting is plated with nickel in order to prevent the sulfuric acid from attacking the surface of the casting.
しρ瓢し、ニッケルメッキによって耐6注を回上嘔せて
も、この耐久性は大体3年位にすぎず、この為ニッケル
メッキ後通常の条件下で使用ちれている場曾には3年後
に再度ニッケルメッキ処理が行なわnているのが現状で
るる。However, even if nickel plating can increase the resistance to 6 injections, this durability is only about 3 years, so if it is used under normal conditions after nickel plating, Currently, the nickel plating process is performed again three years later.
同、ニッケルメッキ厚を厚くすることにより、ニッケル
メッキ再処理を遅くしようとすることも考慮さnたが、
このよフな技術思想では基不的な解決が得られず、つま
りニッケルメッキ厚會厚くしてもそれ程再処理を遅くで
さていない。At the same time, attempts were also made to slow down nickel plating reprocessing by increasing the thickness of the nickel plating, but
This simple technical idea does not provide a fundamental solution; in other words, even thicker nickel plating does not slow down reprocessing much.
不発ky4@は、鋳物製品の硫酸耐蝕性の向上を研死す
る過程において、鋳物表面eこホウロウ保護膜tg8付
候化することによって構成したものは硫酸耐蝕性がニッ
ケルメッキ保護膜の場せよりも著しく同上することに気
付さ、例えにbt0247%、B、0.17% 、 N
a2u 24%、A12(J、 12%の組成のガラス
膜を鋳物表囲に焼付硬化したものt試作した。In order to improve the sulfuric acid corrosion resistance of cast iron products, unexploded KY4@ is constructed by weathering the casting surface with an enamel protective film TG8, which improves the sulfuric acid corrosion resistance of the casting product. Notice that it is also significantly the same as above, for example bt0247%, B, 0.17%, N
A prototype was produced by baking and hardening a glass film having a composition of 24% A2U and 12% A12(J) around the surface of the casting.
このホウロウ保護膜焼付構戚駒物板μ碓〃1に詭酸耐醜
性に凌nでいたことから、早之この技術思想を船用ディ
ーゼル俊関用過甜戦グーンングに応用してりた。Since this enamel protective film-baked structure and piece plate μ1 were superior in acid resistance, Hayabusa applied this technical concept to over-sweetened warguns for marine diesel engines.
こころが、この技術開発の展開途上において予想ban
なかった欠点が埋伏していた0つ了り、510247%
、B2(J317%%Na2024%、Al、0312
%の組成のカラス膜を設りだ船用ディーゼル機関用過
柘愼ケー/ングにv′i歪が起きていて、七のケーシン
グ梢度が狂って29、この独のホウロウ保護膜構成思想
τ船用ディーゼル機関用過給機ケーソングに適用し7こ
場せには、硫酸耐蝕性同上のメリットは得しnても、
*Vこ太さな欠点が現vn1事夷土採用できないもので
りった0
しかし、本光明者は、ホウロウ保護膜による耐、′、鞠
−性同上の効未は魅力的なことより、さらに研
究?絖げ、上記欠点が何故起きるのかt死明した所、ホ
ラロウ焼付時の熱処理温度が一番大きな原因でりること
t追ぎ止のた0つ1ジ箋上記成分のホウaつは焼付温度
が豹650〜70すCりものであゐ為、この=5な尚温
処理t’il+よって鋳物yC歪か起さること7児い出
したのでめろ〇
そこで、本開明者は、この研死粕米を基にしてたものは
、硫酸1lllt蝕性に凌nているの今ならず、焼付処
理によっても病物製品に狂いがほとんど起きていないこ
とを見い出した0
〔実施例〕
鋳物で構fj、δnた怜用ディーゼル愼関用過坩愼ゲー
ジングの排・気通路表面Vこ所ボ厚のニッケルメッキを
施し、該ニッケルメッキ面上に、Na2U・3S10□
2Q M i ’ftf5、a−A右Us75 ’JI
L Jt fls、Tiez;l) X重部刀ゝらなる
N”2U−3S102 ” 7A40s TlO2
”j肩−理科qスプV−ガンで吹付値長し、七の後IL
JfJ’Cのエアーノくス甲に投入し、約りO℃/分で
3t)0°C1で昇温aぜ、セして 1300°Cで
30分間株持する。My heart is in the process of developing this technology, and it is predicted that it will be banned.
0 defects were buried, 510247%
, B2 (J317%%Na2024%, Al, 0312
A glass film with a composition of 29% was installed in a casing for a marine diesel engine, and the v′i distortion occurred, and the casing thickness of 7% was distorted.29 This German enamel protective film composition concept When applied to turbocharger case songs for diesel engines, it has the same advantages as sulfuric acid corrosion resistance, but
*The shortcoming of the V thickness is something that cannot be adopted in the current VN1.However, the present inventor believes that the effects of the enamel protective film on the resistance, and the effectiveness of the same as above are attractive. Further research? Why does the above defect occur?It is clear that the heat treatment temperature during baking of hollow wax is the biggest cause. Since the leopard is a 650 to 70 C animal, this = 5 still temperature treatment t'il+ causes casting YC distortion. It has now been discovered that products based on dead lees rice are superior to the corrosive properties of sulfuric acid, and there is almost no deformation of diseased products even after baking treatment.0 [Example] In castings A thick nickel plating is applied to the exhaust/air passage surface V of the exhaust/air passage gauging for diesel engines with structure fj, δn, and Na2U/3S10□ is applied on the nickel plated surface.
2Q M i 'ftf5, a-A right Us75'JI
L Jt fls, Tiez;l)
``J Shoulder - Science Q Spray V-Gun and spray value long, after 7 IL
Pour into the air tank of JfJ'C, heat up at 0°C/min for 3t), set and hold at 1300°C for 30 minutes.
このNa、Q・n5to2とアルミナといった吠化剤と
の反応によって構成される丁堕映蜆化形成終了佼、試下
菫装上にNa2(J−3SiO2冨有塗料1fJiuo
°Cでスズンーガンによジ血鉄し、でして100℃のエ
アーパス甲に投入し、fJlO℃/分で200℃1で昇
温させ、でして21)t)’Cで60か間株持すめ。After the formation of a phosphorescent compound formed by the reaction between this Na, Q・n5to2 and a coating agent such as alumina, Na2 (J-3SiO2 rich paint 1f Jiuo
Pour the iron into a tube at °C, then put it into an air path at 100 °C, heat it at 200 °C at a rate of fJlO °C/min, and then strain it at 21)t)'C for 60 minutes. Hold it.
上6己のよフに′Ipt戚されると、過坩愼ケーシング
の排気m路都に、鋳物表面のニッケルメッキ層上に耐蝕
性にはやや劣るけれとも耐熱性に冨んたポーラスな層が
形敗さ扛ており、そしてこの層上に厚み1μm程度でほ
りるが緻密な耐vl性に富む層が形成さ扛ており、この
併気通路部の蝋戚耐蝕性は極めて優1tだものでりつ7
こ。′
又、上記保護膜μ、ガラス質なものでりること刀・し硫
酸耐蝕性同上rl:るる程度予想されたものの、保護膜
焼付形成に際して熱処理温度が低いことによって鋳物製
過胎機ケーシングには歪がほとんど起きていないという
従来では全く予想もさ7Lなかった太さな特艮でもたら
すものでめった。すなわち、Na2す・ロSin、ガラ
ス膜が焼付硬化さnてt1過給慎ケーンングの積度は低
FL7jいものでめった。When compared to the above example, a porous layer with high heat resistance, although slightly inferior in corrosion resistance, is formed on the nickel plating layer on the surface of the casting at the exhaust route of the over-concile casing. On top of this layer, a fine layer with a thickness of about 1 μm and highly resistant to VL is formed, and the corrosion resistance of this joint passageway is extremely excellent. Monodoritsu 7
child. ' Also, the above protective film μ is made of a glass material, and the sulfuric acid corrosion resistance is as expected. The 7L was unusual in that it produced almost no distortion, which was unexpectedly thick in the past. In other words, the Na2S/Sin and glass films were hardened by baking, and the t1 supercharging cycle was low at a low FL7j.
δらには、この保護膜は密着性に冨んでいて、保護膜剥
離の恐nもなく、極めて耐久性に冨ひものでりった。つ
ま9、保護膜とニッケルメッキ層との熱膨張係数が同程
度のものでりゐ為、保護膜に亀裂や剥離といった机板の
緬さゐIし配のないちりでめった。δ et al., this protective film had excellent adhesion, and there was no fear of the protective film peeling off, and it was extremely durable. Toe 9: Since the thermal expansion coefficients of the protective film and the nickel plating layer are about the same, the protective film was often cracked and peeled off due to uneven dust on the desk board.
又、ケーシングにNa2O・n5i(J□保獲嗅が形成
名nていると、インペラー号がステンレスで田米でいて
も異独金属よりの元王寛訛によ々電Uが周さないものと
なり、憾って好都合なものでめるO芒しにば、キャビチ
ー7ヨンによる腐蝕の問題も起きない0
〔幼果〕
硫葭耐観注に優7L、又、電し、キャビテーションによ
る腐蝕等を効果的に防止でさ、きりには保護腺形既によ
る病′1llJ製品棺度の低下がないものでめる0Also, if the casing has Na2O/n5i (J Unfortunately, if you use a convenient material, you won't have the problem of corrosion due to cavitation. It can effectively prevent the disease caused by protective gland formation.
Claims (1)
硬化してなる耐蝕性鋳物製品。A corrosion-resistant cast product made by baking and hardening a Na_2O/nSiO_2 glass layer on the surface of the casting.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22778384A JPS61106777A (en) | 1984-10-31 | 1984-10-31 | Corrosion resistant cast product |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22778384A JPS61106777A (en) | 1984-10-31 | 1984-10-31 | Corrosion resistant cast product |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61106777A true JPS61106777A (en) | 1986-05-24 |
Family
ID=16866310
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22778384A Pending JPS61106777A (en) | 1984-10-31 | 1984-10-31 | Corrosion resistant cast product |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61106777A (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5497618A (en) * | 1978-01-19 | 1979-08-01 | Matsushita Electric Ind Co Ltd | Fabricating cooking utensiles |
JPS5635772A (en) * | 1979-08-29 | 1981-04-08 | Matsushita Electric Works Ltd | Manufacture of product having glassy film |
JPS5896876A (en) * | 1981-12-02 | 1983-06-09 | Sumitomo Chem Co Ltd | Formation of wear and corrosion resistant film on metallic material |
-
1984
- 1984-10-31 JP JP22778384A patent/JPS61106777A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5497618A (en) * | 1978-01-19 | 1979-08-01 | Matsushita Electric Ind Co Ltd | Fabricating cooking utensiles |
JPS5635772A (en) * | 1979-08-29 | 1981-04-08 | Matsushita Electric Works Ltd | Manufacture of product having glassy film |
JPS5896876A (en) * | 1981-12-02 | 1983-06-09 | Sumitomo Chem Co Ltd | Formation of wear and corrosion resistant film on metallic material |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2017197734A1 (en) | Long-term anti-corrosion method for power transmission tower | |
JPS61106777A (en) | Corrosion resistant cast product | |
US2709569A (en) | Impeller member and method of making same | |
JPS63260966A (en) | Heat-resisting film for muffler | |
NL8102575A (en) | METHOD FOR TREATING ZINC AND CADMIUM SURFACES AGAINST CORROSION | |
CN106349833A (en) | Displacement metering and detecting equipment | |
Saad et al. | The influence of pack aluminized coatings on the creep behavior of Nimonic 105 | |
JPS6214029B2 (en) | ||
JP4155685B2 (en) | Composite coated member excellent in sulfuric acid dew point corrosion resistance and method for producing the same | |
FR2418275A1 (en) | CORROSION RESISTANT ALUMINUM ALLOY | |
NO138730B (en) | CHEMICAL AND HEAT RESISTANT, INORGANIC COATING LACQUER, ESPECIALLY FOR CAST MOLDS | |
CN1059689C (en) | High-temperature paint | |
DE3638807A1 (en) | Cast iron exhaust manifold for cylinder internal combustion engines | |
SU775364A1 (en) | Coating for i.c. engine combustion chamber | |
GB599684A (en) | Improvements relating to coating metals | |
NL7112213A (en) | Lead coating cast iron - particularly exhaust gas outlet casings for diesel superchargers | |
JPS60131241A (en) | Surface protective structure of metallic blank | |
Czyryca et al. | Corrosion of Aluminum Alloys in Exfoliation-Resistant Tempers Exposed to Marine Environments for Two Years | |
Kearns et al. | Oxidation resistant coatings for titanium alloys | |
JPS58204179A (en) | Coated steel material having resistance to heat and corrosion | |
Spurr | Significance of copper deposits associated with a boiler tube failure | |
JPS56130461A (en) | After-treatment of steel sheet coated with aluminum by hot dipping | |
JPH03120328A (en) | Alloy for an exhaust valve | |
GB153423A (en) | Improvements in or relating to the inlet conduits of internal-combustion engines, and to the manufacture thereof | |
JPS58129198A (en) | Heat exchanger for water heater |