Invention Application
US20140295059A1 REFURBISHMENT PROCESS OF THE PUMPING UNIT IN A VOLUMETRIC SCREW COMPRESSOR OF THE "OIL FREE' TYPE
有权
“无油”类型的体积螺旋压缩机中的泵送单元的再冲洗过程
- Patent Title: REFURBISHMENT PROCESS OF THE PUMPING UNIT IN A VOLUMETRIC SCREW COMPRESSOR OF THE "OIL FREE' TYPE
- Patent Title (中): “无油”类型的体积螺旋压缩机中的泵送单元的再冲洗过程
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Application No.: US14226098Application Date: 2014-03-26
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Publication No.: US20140295059A1Publication Date: 2014-10-02
- Inventor: Fabio RUSSO
- Applicant: Riem Service s.r.l.
- Applicant Address: IT Roma
- Assignee: Riem Service s.r.l.
- Current Assignee: Riem Service s.r.l.
- Current Assignee Address: IT Roma
- Priority: ITMI2013A000452 20130326
- Main IPC: B05D1/02
- IPC: B05D1/02 ; B05D3/02 ; B05D3/12
Abstract:
A refurbishment process for a volumetric screw compressor of the ‘oil-free’ type, which comprises a male rotor and a female rotor, is described. The process comprises visually checking the wear condition of the rotors, treating their surface for removing the previous coating, and applying a new coating on the surface. The composition of the coating applied on the surface of the rotors consists of the following materials: MaterialAmount (g) Polytetrafluoroethylene750 ÷ 850 (954G 303 C Teflon, DuPont) Amorphous graphite powder300 ÷ 400 Thinner for spray cleaning apparatuses200 ÷ 270 (8595 thinner, DuPont) Methyl ethyl ketone (MEK)170 ÷ 220 Cellosolve acetate coating additive200 ÷ 300 (Syn Fac 800 resin)
Public/Granted literature
- US09878347B2 Refurbishment process of the pumping unit in a volumetric screw compressor of the ‘oil free’ type Public/Granted day:2018-01-30
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