Insulating cushion materials for electromagnetic pulse welding and methods for controlling deformation of flyer plates
Disclosed is an insulating cushion material for electromagnetic pulse welding a method for controlling deformation of a flyer plate in electromagnetic pulse welding using the insulating cushion material. The insulating cushion material includes rice grains or bean grains. The method includes: preparing a base plate and the flyer plate for welding, and cleaning and drying the base plate and the flyer plate; determining an overlap spacing and a collision gap based on specifications of the base plate and specifications of the flyer plate; selecting the insulating cushion material based on the collision gap; placing the insulating cushion material between the base plate and the flyer plate based on the overlap spacing; starting an electromagnetic pulse apparatus and performing electromagnetic pulse welding according to a set process parameter; cleaning broken particles of the insulating cushion material between the base plate and the flyer plate after completing the electromagnetic pulse welding.
1 . A method for controlling deformation of a flyer plate in electromagnetic pulse welding using an insulating cushion material comprising rice grains or bean grains, comprising: preparing a base plate and the flyer plate for welding, and cleaning and drying the base plate and the flyer plate; determining an overlap spacing and a collision gap based on specifications of the base plate and specifications of the flyer plate; selecting the insulating cushion material based on the collision gap; placing the insulating cushion material between the base plate and the flyer plate based on the overlap spacing; starting an electromagnetic pulse apparatus and performing electromagnetic pulse welding according to a set process parameter; and cleaning broken particles of the insulating cushion material between the base plate and the flyer plate after completing the electromagnetic pulse welding.
2 . The method of claim 1 , wherein the cleaning broken particles of the insulating cushion material between the base plate and the flyer plate after completing the electromagnetic pulse welding includes: blowing away the broken particles of the insulating cushion material between the base plate and the flyer plate using compressed gas.
3 . The method of claim 2 , wherein, in response to a wall thickness of the flyer plate being not greater than 2 mm, the insulating cushion material is spherical or ellipsoidal rice grains with a diameter of 0.5-1 mm.
4 . The method of claim 2 , wherein, in response to a wall thickness of the flyer plate being greater than 2 mm but not greater than 5 mm, the insulating cushion material is spherical or ellipsoidal rice grains with a diameter of 1.5-2 mm.
5 . The method of claim 2 , wherein, in response to a wall thickness of the flyer plate being greater than 5 mm, the insulating cushion material is spherical or ellipsoidal rice grains with a diameter in a range of 2-3 mm, or the insulating cushion material is soybean grains.
6 . The method of claim 3 , wherein a water content in the insulating cushion material is in a range of 14.5-15.5%.
7 . The method of claim 3 , wherein a spacing between adjacent rice grains is in a range of 10-20 mm.
8 . The method of claim 3 , wherein the spherical or ellipsoidal rice grains are arranged in a single layer between the base plate and the flyer plate.
9 . The method of claim 3 , wherein the spherical or ellipsoidal rice grains are arranged in a matrix between the base plate and the flyer plate.
10 . The method of claim 1 , wherein the flyer plate is a plate having a same shape as the base plate.
11 . The method of claim 1 , wherein a material of the flyer plate is the same as a material of the base plate.
12 . The method of claim 1 , wherein the base plate and the flyer plate partially overlap.