Basic Joints for Weldment Fabrications

BASIC JOINTS

The basic joints used for weldment fabrications are: butt, corner, tee, lap, and edge, Figure 11.1. Combinations of these joints are also used.

For each type of joint, a number of different welds may be applied, Figure 11.1. The selection of the weld is based on a number of factors, including the thickness and kind of material to be welded, the

FILLET 0-C~l PLUG _o_ SLOT

APPLICABLE WELDS JL J-GROOVE

_L£ FLARE BEVEL GROOVE _Q SPOT _a PROJECTION

OTHER SIDE

—LL SQUARE GROOVE

BEVEL GROOVE

* IDENTIFIED BY PROCESS REFERENCE IN TAIL OF WELDING SYMBOL

SEAM

BRAZE

(c) T-JOINT

FIGURE

■ Basic types of joints. (continued)

FIGURE 11.1 ■ Basic types of joints. (concluded)

strength required, the kind of finish desired, and the location of the weld in terms of accessibility for making the weld. As shown in the figure, the weld symbol applied to each of the joints may have an arrow side, other side, or both sides significance. Note that metal shapes other than plate may be used in fabri­cating these joints, Figure 11.4.

The members of the joints to be welded may be formed to a particular shape in preparation for the weld, Figure 11.2(a) through Figure 11.2(d). This is done to increase the strength of the joint and to improve the appearance of the weldment.

~"K"

nna

DOUBLE BEVEL GROOVE

-K-

□a

DOUBLE BEVEL GROOVE WITH SPACER

-ъъ.

FIGURE 11.2(d) ■ Some types of preparation for a lap joint.

FIGURE 11.2(c) ■ Types of preparation for a T-joint.

Оставить комментарий