Detecting tribotechnical properties of the separating coatings for cold forming designed by Modengy, LLC.

Purpose of testing holding: detecting tribotechnical properties of the separating coatings for cold forming designed by Modengy, LLC.

Detecting friction coefficient

Testing Method: ASTM G99

Equipment: SHD-01 friction machine

Fig.1. SHD-01 friction machine

Testing conditions: ‘sphere-to-plane’ contact scheme, slide rate V=0.2 m/s, contact pressure P=1,810 MPa (PV=3.62·105 N/mm·s)

Table 1. Test results on detecting friction coefficients

Fig.2. Graphs of friction coefficient changing depending on the cycles number of the sphere indentor’s going along the lubricated surface

Detecting antiwear and antiscuff properties

Testing Method: the Reichert method

Equipment: the Reichert friction machine

Fig.3. the Reichert friction machin

Testing conditions: ‘roller-to-roller’ contact scheme, slide rate V=0.67 m/s, contact pressure for the first block step P1=1,354 MPa, (PV=9.07·105 N/mm·s), for the second block step P2=1,700 MPa, (PV=1.14·106 N/mm·s), for the third block step P3=1,944 MPa, (PV=1.30·106 N/mm·s) 

Table 2. Tests results on detecting antiwear and antescuff properties

Conclusions

On the basis of anti-friction, antiwear, and antiscuff properties for cold forming, it is recommended to use MODENGY 1020 separating coating.