What do we mean by next generation?
When it comes to machining Aluminum Alloys, or used in conjunction with other coatings for dry or “quasi” dry machining, SurfTech® 5000 Series coatings are the preferred choices by customers in side by side comparative testing.
SurfTech® 5000 Series can be used as either a stand-alone coating or in conjunction with SurfTech® 4000 Series (a B4C Multilayer) or with SurfTech® 6120 Series (TiAlN) which have better abrasion resistance and heat insulating properties especially in the area of dry machining. According to our customers, no other type of MoS2coating or any other coating, has yielded the results that SurfTech® 5000 Series . (Fig. 1.0)
What we mean by next generation coatings is that we build multilayer coatings. (Fig. 1.1) We build a sandwich in which we control the thickness’ of each layer to; 1) make the coating more lubricious, 2) make the coating harder, 3) make the coating to dissipate heat, 4) make the coating more abrasion resistant, depending on the application. This not only holds true for cutting tool applications but for wear components as well. SurfTech® 5000 Series can be used alone, for break-in on bearings or spools, or can be used in conjunction with any other SurfTech® coating that may require extra lubricity in conjunction with a very hard coating for wearability.
In contrast to other MoS2 coatings, SurfTech® 5300 is also hard (2900 Knoop). This is a major benefit for cutting tools as ‘softer’ MoS2 coatings are easily removed during chip removal. Because of these properties; coefficient of friction (<0.1) and its hardness, further benefits can be achieved through reduced coolant requirements.
SurfTech® 5000 Series having a thickness of 1µm – 3µm and having excellent uniformity of thickness (fig. 1.3 & 1.4), will not affect critical tools such as reamers, therefore the tools need not be manufactured with any tolerance changes. All tools can be coated, including brazed carbide and gun drills, because the process temperatures do not exceed 200°F and thereby have no affect on the brazed joints or the hardness of the tools.
- Type of Process: PVDI (Physical Vapor Deposition, Ion Assisted)
- Coating Structure: Multilayer coating
- Coloration of coating: Grey/Silver
- Thickness of coating: 1 to 3 µm
- Hardness of coating: 2900 Knoop
- Maximum operating Temperatures (ºC): <750
- Coefficient of Friction: <0.1