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  3. C17300 surface corrosion treatment proce...
Beryllium bronze is the "king of elasticity" in copper alloys. After solid solution aging heat treatment, products with high strength and high conductivity can be obtained. High-strength cast beryllium copper alloy, after heat treatment, not only has high strength, high hardness, but also has the advantages of wear resistance and corrosion resistance, excellent casting performance, beryllium bronze alloy is suitable for manufacturing various molds, explosion-proof safety tools, wear resistance Parts such as cams, gears, worm wheels, bearings, etc. Therefore beryllium copper alloys have been widely used in many important industrial materials.

However, when exporting by sea, a large amount of beryllium copper alloy suffered from salt in seawater and corrosion with relatively high humidity. And serious losses. This article mainly describes the surface treatment process of beryllium copper alloy in explosion-proof tools, which will reduce corrosion when it is exported by sea.

Beryllium copper master alloy (in accordance with YB8530-75 standard, hereinafter referred to as beryllium copper alloy) is an alloy with beryllium as the main raw material. It is a bridge-out hardening alloy. After aging hardening treatment, it can reach the strength and alloy equivalent Hardness, at the same time, it also has the characteristics of not generating sparks under severe impact. Therefore, it is the most ideal material for manufacturing safety explosion-proof and fire-proof tools.

At room temperature, C17300 beryllium copper alloy has a very bright color and does not fade for a long time. Therefore, many tools and crafts made by it are loved by everyone. However, in a humid environment, copper is prone to discoloration, which will cause scrap of these products and make export of these products a problem. Therefore, the surface of the beryllium copper alloy needs to be processed to reduce or even not corrode in the humid environment during sea transportation. The surface treatment includes coating, polishing, degreasing, rust removal, passivation and other processes.
 C17300 pī tóng de biǎomiàn kàng shí chǔlǐ gōngyì pī qīngtóng, shì tóng héjīn zhōng de “tánxìng zhī wáng”, jīng gù róng shíxiào rèchǔlǐ hòu, kě huòdé gāo qiángdù, gāo dǎodiàn xìngnéng de chǎnpǐn. Gāo qiángdù zhùzào pī tóng héjīn, jīng rèchǔlǐ hòu bùjǐn jùyǒu gāo qiángdù, hěn gāo de yìngdù érqiě jùyǒu nài mó, nài shí de yōudiǎn, yōuliáng de zhùzào xìngnéng, pī qīngtóng héjīn shìyòng yú zhìzào gè zhǒng mújù, fángbào ānquán gōngjù, nài mó jiàn rú túlún, chǐlún, guālún, zhóuchéng děng yīncǐ pī tóng héjīn yǐjīng guǎngfàn yìngyòng yú xǔduō chóng yào de gōngyè cáiliào. Dànshì zài hǎiyùn chūkǒu shí, dàliàng pī tóng héjīn zāoshòudào hǎishuǐ lǐ yánfèn, jiào dà shīdù de fǔshí. Qiě sǔnshī yánzhòng. Běnwén zhǔyào chǎnshù pī tóng héjīn zài fángbào gōngjù zhōng de biǎomiàn chǔlǐ gōngyì, shǐ qí zài hǎiyùn chūkǒu shí jiǎnshǎo fǔshí. Pī tóng mǔ héjīn (fúhé YB8530-75 biāozhǔn, yǐxià jiǎnchēng pī tóng héjīn) shì yǐ pī wéi zhǔyào tiānjiā yuánliào de héjīn, shì yī zhǒng qiáo chū yìnghuà xíng héjīn, jīngguò shíxiào yìnghuà chǔlǐ hòu kěyǐ dádào yǔ héjīn gāng xiāngdāng de qiángdù hé yìngdù, tóngshí hái jùyǒu zài měngliè chōngjí xià bù chǎnshēng huǒhuā de tèxìng. Yīncǐ, tā shì zhìzào ānquán fángbào, fánghuǒ gōngjù zuì lǐxiǎng de cáiliào. Zài chángwēn xià,C17300 pī tóng héjīn jùyǒu hěn liànglì de sècǎi, érqiě chángjiǔ bù tuìshǎi. Yīncǐ yóu qí zhìzuò de hěnduō gōngjù jí gōngyìpǐn shòu dào dàjiā de xǐ'ài. Dànshì zài cháoshī de huánjìng zhōng, tóng yì biànsè, zhèyàng jiù huì zàochéng zhèxiē chǎnpǐn de bàofèi, shǐdé zhèxiē chǎnpǐn chūkǒu biàn chéngle wèntí. Yīncǐ, pī tóng héjīn de biǎomiàn xūyào chǔlǐ shǐ qí zài hǎiyùn guòchéng zhōng jí zài cháoshī de huánjìng xià jiǎnshǎo shènzhì bù fǔshí, biǎomiàn chǔlǐ bāokuò tú céng, pāoguāng, chú yóu, chú xiù, dùn huà děng gōngyì. C17300 pī tóng---diànjiěchú yóu gōngyì diànjiěchú yóu shì jiāng gōngjiàn fàng zài yīnjí huò yángjí shàng jìnxíng diàn jiě ér jiāng yóuwū qùchú de fāngfǎ. Qí chú yóu xiàolǜ jí zhìliàng dōu bǐ huàxué chú yóu hǎo. Cháng zuòwéi dù qián de zuìzhōng chú yóu. 1, Diàn jiěchú yóu de shízhì shì diàn jiě shuǐ:2H2O→2H2↑+O2↑ 2, zài yīnjí shàng xīchū qīngqì:2H++2e=H2↑ 3, zài yángjí shàng xīchū yǎngqì:4OH--4e=2H2O+O2↑ C17300---pī tóng pāoguāng chǔlǐ gōngjiàn jītǐ biǎomiàn guāngjiédù yuè gāo, tú fù mó yǔ gōngjiàn jiéhé de jiù yuè hǎo, kàng fǔshí xìngnéng yuè hǎo. Yīncǐ, wèile tígāo gōngjiàn biǎomiàn dùcéng de zhìliàng, zài zuò tú fù mó chǔlǐ qián duì gōngjiàn jìnxíng jīxiè pāoguāng chǔlǐ. Gōngjiàn jīng dǎmó, chú yóu hòu, mǒu xiē bùwèi xiù diǎn réng wèi chùqú huò biǎomiàn chǔyú dùn huà zhuàngtài. Yīncǐ, zài dù qián xū jìnxíng huóhuà chǔlǐ. Chángyòng de jìn shí jì yǒu liúsuān, yánsuān děng. Zài běn shíyàn zhōng cǎiyòng guāngliàng suān xǐ fǎ, xiāosuān liúsuān yánsuān dōu shǐyòng, yīnwèi gōngjiàn wèi pī tóng héjīn bù yǔ yánsuān fǎnyìng, suǒyǐ bùnéng dāndú shǐyòng yánsuān jìnxíng chú xiù chǔlǐ. 展开 904/5000 C17300 surface corrosion treatment process of beryllium copper

C17300 beryllium copper --- electric degreasing process


Electrolytic degreasing is a method of removing oil stains by placing a workpiece on the cathode or anode for electrolysis. Its degreasing efficiency and quality are better than chemical degreasing. Often used as final degreasing before plating.
1. The essence of electrolysis oil is electrolyzed water: 2H2O → 2H2 ↑ + O2 ↑
2. Hydrogen evolution on the cathode: 2H ++ 2e = H2 ↑
3. Precipitation of oxygen on the anode: 4OH--4e = 2H2O + O2 ↑

C17300 --- Beryllium copper polishing


The higher the surface finish of the workpiece substrate, the better the coating film is combined with the workpiece, and the better the corrosion resistance. Therefore, in order to improve the quality of the surface coating of the workpiece, the workpiece is mechanically polished before being coated. After the workpiece has been polished and the oil is removed, the rust spots in some parts have not been removed or the surface is in a passivated state.

Therefore, activation treatment is required before plating. Commonly used etchants are sulfuric acid and hydrochloric acid. In this experiment, both bright pickling method and nitric acid, sulfuric acid and hydrochloric acid are used. Because the workpiece is a beryllium copper alloy that does not react with hydrochloric acid, hydrochloric acid cannot be used for rust removal alone.

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