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US 2017/0247633 A1Published application
Water-based coolant
AssigneeIdemitsu Kosan Co., Ltd.
InventorsMayu HASEGAWA, Masahisa GOTO, Katsumi ICHITANI, Kenro NOGUCHI
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Abstract
Disclosed herein is a method of using a water-based coolant for quenching or cutting a metal material. The water-based coolant is formed of: water; at least one inorganic acid salt selected from the group consisting of a carbonate, a hydrogen carbonate, a sesquicarbonate, a phosphate, a borate, a molybdate and a tungstate; a metal corrosion inhibitor; and optionally at least one of a bactericide, a water-soluble rust inhibitor, an antioxidant and a detergent dispersant.
Claims11
1:
- A method, comprising quenching or cutting a metal material using a water-based coolant consisting of:
- water;
- at least one inorganic acid salt selected from the group consisting of a carbonate, a hydrogen carbonate, a sesquicarbonate, a phosphate, a borate, a molybdate and a tungstate;
- a metal corrosion inhibitor;
- and optionally
- at least one of a bactericide, a water-soluble rust inhibitor, an antioxidant and a detergent dispersant.
3 more elements
2:
- The method according to claim 1, wherein the metal corrosion inhibitor comprises at least one compound selected from among a benzotriazole compound, a benzimidazole compound, a benzothiazole compound and a benzothiadiazole compound.
3:
- The method according to claim 1, wherein the water-based coolant contains a bactericide.
4:
- The method according to claim 3, wherein a content of the bactericide in the water-based coolant is in a range from 0.001 mass % to 0.5 mass % of a total amount of the coolant.
5:
- The method according to claim 1, wherein a content of the inorganic acid salt in the water-based coolant is in a range from 1 mass % to 20 mass % of a total amount of the coolant.
6:
- The method according to claim 1, wherein a content of the metal corrosion inhibitor in the water-based coolant is in a range from 0.01 mass % to 1 mass % of a total amount of the coolant.
7:
- The method according to claim 1, wherein the water-based coolant includes an inorganic acid metal salt as the inorganic acid salt.
8:
- The method according to claim 1, wherein the inorganic acid salt comprises at least one of a sodium salt, a potassium salt, a calcium salt and a magnesium salt.
9:
- The method according to claim 1, wherein the water-based coolant includes at least one of an orthophosphate, a hydrogenphosphate, a dihydrogenphosphate, a polyphosphate and a metaphosphate as the phosphate.
(canceled)
11:
- The method according to claim 1, wherein the water-based coolant consists of:
- water;
- the at least one inorganic acid salt;
- the metal corrosion inhibitor;
- and optionally
- at least one of a bactericide, a water-soluble rust inhibitor and an antioxidant.
3 more elements
Dependencies are inferred from the claim text.