6.2　Billet Shears

6.2.1　Base plate installation shall meet the requirements of articles 5.2.1 to 5.2.3 in this code.

6.2.2　Allowable deviation for base plate installation shall be in accordance with those specified in Table 6.2.2.

Table 6.2.2　Allowable deviation for base p late installation

6.2.3　Mill housing installation shall meet the requirements of articles5.3.1 to 5.3.7 in this code.

6.2.4　Allowable deviation for mill housing installation shall be in accordance with those specified in Table 6.2.4.

Table 6.2.4　Allowable deviation for mill housing installation

6.2.5　Shear reducer installation shall meet the requirements of articles 5.4.1 to 5.4.2 in this code.

6.2.6　Allowable deviation for shear reducer installation shall be in accordance with those specified in Table 6.2.6.

Table 6.2.6　Allowable deviation for shear reducer installation

6.2.7　Knife changing device installation for billet shears shall be in accordance with the following requirements:

1　Take mill housing centerline as a reference to measure the rail centerline of knife changing device.

2　Take rolling centerline as a reference to measure the top sliding rail centerline of traversing base plate.

3　Take knife changing rail inside mill housing as a reference to measure the elevation of knife changing rail surface and the elevation of top sliding rail surface of traversing base plate.

4　Measure the levelness and relative levelness of knife changing rail surface and top sliding rail surface of traversing base plate.

6.2.8　Allowable deviation for knife changing device installation of billet shears shall be in accordance with those specified in Table 6.2.8.

Table 6.2.8　Allowable deviation for knife changing device installation of billet shears