Term
| How many welds does API 577 require to be radiographed? |
|
Definition
NONE!
The number of welds RT is established by the Primary Code |
|
|
Term
| The deflection of an arc from its normal path because of magnetic forces. Is the definition for? |
|
Definition
|
|
Term
The distance from the tip of the welding electrode to the adjacent surface of the weld pool.
Is the definition for? |
|
Definition
|
|
Term
A fusion weld made without filler metal.
is the definition for a? |
|
Definition
|
|
Term
A disconitinuity or discontinuities that by nature or accumulated effect (for example total crack length) render a part or product unable to meet minimum applicable acceptance standards or specifications.The term designates rejectability.
The term is? |
|
Definition
|
|
Term
| An interruption of the typical structure of a material, such as a lack of homogeneity in its mechanical, metallurgical, or physical characteristics. A _________ is not necessatily a defect. |
|
Definition
Definition of a:
Discontinuity
A Discontinuity is not necessatily a defect. |
|
|
Term
| Which welding process is most widely used? |
|
Definition
SMAW
Shielded Metal Arc Welding |
|
|
Term
| Arc between covered electrode and weld pool. Heat of Arc comes from tip of a consumable covered electrode. Shielding comes from decomposition of the electrode coating. This description is for what process. |
|
Definition
SMAW
Shielded Metal Arc Welding |
|
|
Term
| Basic functions of the SMAW coating are? |
|
Definition
1. Shielding Gas
2. Prevent excessive Grain Growth
3. Slag blanket to protect weld
4. Sometimes provides alloy elements |
|
|
Term
| Limitations of shielded metal arc welding? |
|
Definition
A. Disposition rates are lower than other processes.
B. Slag usually must be removed at stops and starts, and before depositing a weld bead adjacent to or onto a previous deposited weld bead. |
|
|
Term
| What Variables are required on a WPS? |
|
Definition
| Essential, Non-essential, and supplemental essential when toughness testing is required. |
|
|
Term
| What are some advantages for SMAW? |
|
Definition
A. Equipment is relatively simple, inexpensive, and portable.
B. Process can be used in areas limited access.
C. Process is less sensitive to wind and drafts then other welding processes.
D. Process is suitable for most of the commonly used metals and alloys. |
|
|
Term
|
Definition
A. Produces high purity welds, generally free from defects.
B. Little post-weld cleaning is required.
C. Allows for excellent control of root pass weld penetration.
D. Can be used with or without filling metal, dependent on the application |
|
|
Term
|
Definition
A. Disposition rates are lower than the rates possible with consumable electrode arc welding processes.
B. Has a low tolerance for contaminants on filler or base metals.
C. Difficult to shield the welds zone in drafty environments. |
|
|
Term
| Which process uses a direct stream of discrete drops? |
|
Definition
| GMAW- Spray transfer mode |
|
|
Term
| Variables required on a PQR? |
|
Definition
| Essential varables, non essential variables are optional. |
|
|
Term
| Who supervises the testing of a PQR coupon? |
|
Definition
| Manufacturer or Contractor- the owner of the procedure |
|
|
Term
|
Definition
|
|
Term
| What is the purpose of P-Numbers? |
|
Definition
| Reduces the number of welding procedures qualifications required. |
|
|
Term
| What is the basis for F-Numbers? |
|
Definition
| Usability characteristics |
|
|
Term
| What is the qualification limits for a welder who qualifies using an electrode from a specific F-Number family? |
|
Definition
| Qualified for all electrodes that are the same F-Number. With carbon steel electrodes sometimes also qualifies for other F-Numbers |
|
|
Term
|
Definition
| Analysis of the chemical composite of the weld. |
|
|
Term
| A change in an WPQ essential variable requires: |
|
Definition
|
|
