Washing technology of waste bolt
A bolt and waste technology, applied in the field of waste bolt cleaning technology, can solve problems such as inconvenient disassembly, decreased bolt tightening force, and bolt hydrogen embrittlement, so as to avoid reuse, improve cleaning effect, and reduce the effect of corrosion.
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Embodiment 1
[0040] The cleaning solution includes the following components in parts by weight: 35 parts of sinapic acid, 31 parts of cinnamic acid, 25 parts of citrate, 22 parts of amino acid, 16 parts of corrosion inhibitor and 8 parts of water.
[0041] The corrosion inhibitor includes the following components in parts by weight: 30 parts of p-chloroacetophenone, 11 parts of thionyl chloride, 13 parts of pyridine, 20 parts of triethylamine, 28 parts of ethyl cyanoacetate, and 8 parts of ethanol and 3 parts of sodium hydroxide, the mass fraction of sodium hydroxide is 10%, the synthetic route can be found in figure 2 , where R is Cl.
[0042] The preparation technology of corrosion inhibitor comprises the following steps:
[0043] T1. Prepare each component according to the above proportioning ratio, and divide the sodium hydroxide into two equal parts;
[0044] T2. Put p-chloroacetophenone and thionyl chloride into the reaction kettle, raise the temperature of the reaction kettle to ...
Embodiment 2
[0048] The cleaning solution includes the following components in parts by weight: 42 parts of sinapic acid, 37 parts of cinnamic acid, 28 parts of citrate, 27 parts of amino acid, 23 parts of corrosion inhibitor and 11 parts of water.
[0049] The corrosion inhibitor includes the following components in parts by weight: 42 parts of p-chloroacetophenone, 18 parts of thionyl chloride, 19 parts of pyridine, 25 parts of triethylamine, 39 parts of ethyl cyanoacetate, and 14 parts of ethanol and potassium hydroxide 3 to 5 parts, the mass fraction of potassium hydroxide is 15%.
[0050] The preparation technology of corrosion inhibitor comprises the following steps:
[0051] T1, prepare each component according to above-mentioned proportioning, and potassium hydroxide is divided into two equal parts;
[0052] T2. Put p-chloroacetophenone and thionyl chloride into the reaction kettle, raise the temperature of the reaction kettle to 60°C, slowly add pyridine dropwise at a rate of 15m...
Embodiment 3
[0056] The cleaning solution includes the following components in parts by weight: 39 parts of sinapic acid, 34 parts of cinnamic acid, 26 parts of citrate, 25 parts of amino acid, 20 parts of corrosion inhibitor and 9 parts of water.
[0057] The corrosion inhibitor includes the following components in parts by weight: 36 parts of p-chloroacetophenone, 15 parts of thionyl chloride, 16 parts of pyridine, 23 parts of triethylamine, 32 parts of ethyl cyanoacetate, and 12 parts of ethanol And 4 parts of sodium hydroxide, the massfraction of sodium hydroxide is 13%.
[0058] The preparation technology of corrosion inhibitor comprises the following steps:
[0059] T1. Prepare each component according to the above proportioning ratio, and divide the sodium hydroxide into two equal parts;
[0060] T2. Put p-chloroacetophenone and thionyl chloride into the reaction kettle, raise the temperature of the reaction kettle to 50°C, slowly add pyridine dropwise, the dropping rate of pyridin...
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