Ultra-segondè vakyòm asye pur: 316L vs . 304 L vs . 440 C

 

Poukisa 316L-ESU estanda lò a pou chanm vakyòm?
Electroslag remelted (ESU) 316L reyalize total outgassing<5×10⁻¹¹ torr·L/s·cm². Bulk hydrogen content <0.5 ppm prevents virtual leaks. Certified to ASTM A479 with controlled magnetic permeability (<1.02 μ).

 

Lè se 304L-Var pi preferab pou sistèm UHV?
Vacuum arc remelted 304L ofri pi bon vakyòm ultim (10⁻⁻ mbar) pase klas estanda . pi ba kontni nikèl diminye to pèrmiz idwojèn pa 30% konpare ak 316L .

 

Poukisa sèvi ak 440C pou BEARINGS vakyòm?
Fè tèt di toujou 58-60 HRC pou operasyon patikil-gratis . Espesyal Vacuum Degassing pandan limit pwodiksyon librifyan outgassing .<10⁻⁹ mbar with dry film lubrication.

 

Preparasyon sifas pou outgassing minim?
Electropolishing retire 20μm kouch sifas . Swiv avèk 400 degre bakeout pou 48 èdtan . Sifas final brutality ra<0.05μm reduces adsorption sites. Hydrogen firing at 950°C for critical components.

 

Ki jan yo verifye konpatibilite vakyòm?
Rezidyèl Gaz Analyzer (RGA) Tès pou H₂, CO, H₂O Peaks . Total pèt mas<0.1% per ASTM E595. Secondary ion mass spectrometry (SIMS) for surface contaminant mapping.