Quality Control and Production.
A 16-step quality-control
procedure insures a defect-free product. We continuously certify, test
and validate procedures. All raw materials, suppliers and incoming shipments
must meet tough standards. SPC and process modeling control material properties
and maintain high yield rates.
Wexco backing steels
include JP38 Micro-alloy, 4140, 1020, 1026 AISI base steels for most applications.
316SS is used in applications requiring FDA approval, 304SS, Carpenter
20CB-3 and other stainless products are also utilized. Special alloys
include Hastelloy C276, Haynes 242, 625, 718 and 720 Inconel.
A precise analysis
and weighing of inlay chemistry is performed prior to the furnace cycle.
The alloy is then uniformly placed into the bore length along with a proprietary
fluxing mixture to provide an integrated bond between base metal and the
The engineered control
system on the Wexco designed furnace delivers precise time and temperature
cycles. These are critical to lining formation and dimensional stability.
The monitoring system tells us precisely when to remove the cylinder from
Rapid rotational velocity
ensures uniform inlay dispersion, density, thickness and hardness. Then
controlled cooling transforms metallic structure and prevents distortion.
The Wexco process is so consistent that temperature related defects are
virtually non-existent and lining hardness is controlled to 3-sigma.
Inside diameters are
ground to precise dimension. Then the straightness, concentricity (TIR)
and hardness are confirmed. After all quality requirements are satisfied,
the cylinder is polished to the specified finish.
We use electron discharge
machining (EDM), wire EDM and traditional machining to achieve the most
complex configurations. A close attention to detail ensures that finished
cylinders are free of stress.
We give each cylinder one more final inspection to certify that it is defect free and in tolerance.