RU2013138965A

RU2013138965A - METHOD FOR POLISHING PARTS FROM TITANIUM ALLOYS

Info

Publication number: RU2013138965A
Application number: RU2013138965/02A
Authority: RU
Inventors: Анатолий Михайлович Смыслов; Дамир Рамилевич Таминдаров; Аскар Джамилевич Мингажев; Марина Константиновна Смыслова; Александра Борисовна Самаркина
Original assignee: Общество с ограниченной ответственностью "Научно-производственное предприятие "Уралавиаспецтехнология"
Priority date: 2013-08-20
Filing date: 2013-08-20
Publication date: 2015-02-27
Also published as: RU2552203C2

Abstract

1. Способ полирования деталей из титановых сплавов, включающий погружение детали в электролит, содержащий окислитель, фторсодержащее соединение и воду, формирование вокруг обрабатываемой поверхности детали парогазовой оболочки и зажигание разряда между обрабатываемой деталью и электролитом путем подачи на обрабатываемую деталь электрического потенциала, отличающийся тем, что к обрабатываемой детали прикладывают электрический потенциал от 250 В до 320 В, причем в качестве электролита используют водный раствор с содержанием от 3 до 7 вес % гидроксиламина солянокислого чистого, ЧДА или технически чистого, а полирование ведут при температуре от 70°С до 90°С, используя в качестве фторсодержащего соединения NaF или KF, концентрацией, вес. от 0,7 до 0,8%.2. Способ по п.1, отличающийся тем, что полирование ведут при величине тока от 0,2 А/смдо 0,7 А/см, в течение не менее 1,5 минут.3. Способ по п.1, отличающийся тем, что в качестве деталей используют лопатки турбомашины.4. Способ по п.2, отличающийся тем, что в качестве деталей используют лопатки турбомашины.5. Способ по п.1, отличающийся тем, что используют детали, выполненные из титанового сплава, содержащего, вес.%: V - от 3,5% до 5,3%; Al - от 5,3% до 6,8%; Fe - до 0,3%; С - до 0,1%; N - до 0,05%; Zr - до 0,3%; О - до 0,2%; Н - до 0,015%; Ti - остальное или содержащего, вес.%: Al - от 5,0% до 7,0%; Мо - от 2,0% до 4,0%; Zr - до 0,5%; Si - от 0,15% до 0,40; Fe - до 0,3%; О - до 0,15%; Н - до 0,015%; N - до 0,05%; С - до 0,1%; Ti -остальное.6. Способ по п.2, отличающийся тем, что используют детали, выполненные из титанового сплава, содержащего, вес.%: V - от 3,5% до 5,3%; Al - от 5,3% до 6,8%; Fe - до 0,3%; С - до 0,1%; N - до 0,05%; Zr - до 0,3%; О - до 0,2%; H - до 0,015%; Ti - остальное или содержащего, вес.%: Al - от 5,0% до 7,0%; Мо - от 2,0% до 4,0%; Zr 1. A method of polishing parts from titanium alloys, comprising immersing the part in an electrolyte containing an oxidizing agent, a fluorine-containing compound and water, forming a gas-vapor shell around the workpiece surface and igniting a discharge between the workpiece and the electrolyte by applying an electric potential to the workpiece, characterized in that an electric potential of 250 V to 320 V is applied to the workpiece, and an aqueous solution with a content of 3 to 7% by weight is used as the electrolyte hydroxylamine hydrochloric acid pure, PSA or technically pure, and polishing is carried out at a temperature of from 70 ° C to 90 ° C, using NaF or KF as a fluorine-containing compound, concentration, weight. from 0.7 to 0.8%. 2. The method according to claim 1, characterized in that the polishing is carried out at a current value of from 0.2 A / cm to 0.7 A / cm, for at least 1.5 minutes. The method according to claim 1, characterized in that the blades of a turbomachine are used as parts. The method according to claim 2, characterized in that the blades of a turbomachine are used as parts. The method according to claim 1, characterized in that the use of parts made of a titanium alloy containing, wt.%: V - from 3.5% to 5.3%; Al - from 5.3% to 6.8%; Fe - up to 0.3%; C - up to 0.1%; N - up to 0.05%; Zr - up to 0.3%; About - up to 0.2%; H - up to 0.015%; Ti - the rest or containing, wt.%: Al - from 5.0% to 7.0%; Mo - from 2.0% to 4.0%; Zr - up to 0.5%; Si - from 0.15% to 0.40; Fe - up to 0.3%; O - up to 0.15%; H - up to 0.015%; N - up to 0.05%; C - up to 0.1%; Ti is the rest. 6. The method according to claim 2, characterized in that the use of parts made of a titanium alloy containing, wt.%: V - from 3.5% to 5.3%; Al - from 5.3% to 6.8%; Fe - up to 0.3%; C - up to 0.1%; N - up to 0.05%; Zr - up to 0.3%; About - up to 0.2%; H - up to 0.015%; Ti - the rest or containing, wt.%: Al - from 5.0% to 7.0%; Mo - from 2.0% to 4.0%; Zr

Claims

1. A method of polishing parts from titanium alloys, comprising immersing the part in an electrolyte containing an oxidizing agent, a fluorine-containing compound and water, forming a gas-vapor shell around the workpiece surface and igniting a discharge between the workpiece and the electrolyte by applying an electric potential to the workpiece, characterized in that an electric potential of 250 V to 320 V is applied to the workpiece, and an aqueous solution with a content of 3 to 7% by weight is used as the electrolyte hydroxylamine hydrochloric acid pure, PSA or technically pure, and polishing is carried out at a temperature of from 70 ° C to 90 ° C, using NaF or KF as a fluorine-containing compound, concentration, weight. from 0.7 to 0.8%.

2. The method according to claim 1, characterized in that the polishing is carried out at a current value of from 0.2 A / cm ² to 0.7 A / cm ² for at least 1.5 minutes.

3. The method according to claim 1, characterized in that the blades of a turbomachine are used as parts.

4. The method according to claim 2, characterized in that the blades of a turbomachine are used as parts.

5. The method according to claim 1, characterized in that the use of parts made of a titanium alloy containing, wt.%: V - from 3.5% to 5.3%; Al - from 5.3% to 6.8%; Fe - up to 0.3%; C - up to 0.1%; N - up to 0.05%; Zr - up to 0.3%; About - up to 0.2%; H - up to 0.015%; Ti - the rest or containing, wt.%: Al - from 5.0% to 7.0%; Mo - from 2.0% to 4.0%; Zr - up to 0.5%; Si - from 0.15% to 0.40; Fe - up to 0.3%; O - up to 0.15%; H - up to 0.015%; N - up to 0.05%; C - up to 0.1%; Ti is the rest.

6. The method according to claim 2, characterized in that the use of parts made of a titanium alloy containing, wt.%: V - from 3.5% to 5.3%; Al - from 5.3% to 6.8%; Fe - up to 0.3%; C - up to 0.1%; N - up to 0.05%; Zr - up to 0.3%; About - up to 0.2%; H - up to 0.015%; Ti - the rest or containing, wt.%: Al - from 5.0% to 7.0%; Mo - from 2.0% to 4.0%; Zr - up to 0.5%; Si - from 0.15% to 0.40; Fe - up to 0.3%; O - up to 0.15%; H - up to 0.015%; N - up to 0.05%; C - up to 0.1%; Ti is the rest.

7. The method according to claim 3, characterized in that they use blades made of a titanium alloy containing, wt.%: V - from 3.5% to 5.3%; Al - from 5.3% to 6.8%; Fe - up to 0.3%; C - up to 0.1%; N - up to 0.05%; Zr - up to 0.3%; About - up to 0.2%; H - up to 0.015%; Ti - the rest or containing, wt.%: Al - from 5.0% to 7.0%; Mo - from 2.0% to 4.0%; Zr - up to 0.5%; Si - from 0.15% to 0.40; Fe - up to 0.3%; O - up to 0.15%; H - up to 0.015%; N - up to 0.05%; C - up to 0.1%; Ti is the rest.

8. The method according to claim 4, characterized in that they use blades made of a titanium alloy containing, wt.%: V - from 3.5% to 5.3%; Al - from 5.3% to 6.8%; Fe - up to 0.3%; C - up to 0.1%; N - up to 0.05%; Zr - up to 0.3%; About - up to 0.2%; H - up to 0.015%; Ti - the rest or containing, wt.%: Al - from 5.0% to 7.0%; Mo - from 2.0% to 4.0%; Zr - up to 0.5%; Si - from 0.15% to 0.40; Fe - up to 0.3%; O - up to 0.15%; H - up to 0.015%; N - up to 0.05%; C - up to 0.1%; Ti is the rest.

9. The method according to any one of claims 1 to 6, characterized in that use parts with a roughness of the original polished surface of not more than Ra 0.80 μm.

10. The method according to any one of claims 7 to 8, characterized in that they use blades with a roughness of the initial polished surface of not more than Ra 0.80 μm.