恢复阀门孔：铰刀技术

基本说明

第一步是充分准备阀门孔，使得它可以适当地工作。从孔中取出阀门待铰孔后，在溶剂罐中彻底清洁孔。清洁后，将阀门/泵体水平夹紧到替补席上用开放电路。确保不要直接夹在孔上才能连接，因为它可能导致失真。接下来，用切割液（如煤油或Tap Magic™）填充孔。

Some Sonnax reamers are piloted by the existing valve bore, while others require a drill jig or reamer bushing to align and guide the reamer in the bore. Before inserting the reamer, soak the fluted end of the reamer with cutting fluid. Next, insert the reamer into the bore until the reamer tip contacts the first bore to be cut.

The lead chamfer or guide tip在铰刀上会有助于稳定and center the reamer. With the reamer carefully and securely positioned, use a speed handle to ream the bore in as level a manner as possible. The reaming action should be clockwise in a smooth and continuous motion, at approximately 1 to 1.5 revolutions per second. The reamer should actually pull itself through the bore, so little or no forward feed pressure should be applied to the reamer or the speed handle.

继续扩眼,直到指定的停止reamer is reached. Spin the reamer five to ten more times to allow for the removal of any excess material and for better surface finish. Using low air pressure, blow the chips free before removing the reamer from the bore.

To remove the reamer, continue turning clockwise while slowly pulling outward on the reamer. Remove any remaining debris from the bore with low air pressure and another cleaning in the solvent tank. Lubricate the bore and replacement valve with ATF. If the valve-to-bore fit is snug, repeat the reaming procedure with an air drill at 500 RPM. Once you’ve reamed a few bores and get a feel for the technique, the procedure can be fine-tuned to best suit your particular needs.