储罐焊接规范

当有硬度或缺口冲击韧性要求时，生产部件的焊接应使用用于PQR相同牌号和型号的焊材。

4.7

Vendor-Contractor shall submit a detailed weld map to Purchaser at the time of WPS/PQR submittal. Fabrication shall not start until the weld map is returned with instruction to proceed. The weld map shall contain, as a minimum, the following information: 卖方－承包商应在向采购方提交WPS／PQR的同时提交一份详细的焊缝布置图。只有焊缝布置图的允许实施意见返回之后，制造才能开始。焊缝形式图至少应包含下列资料：

A B C

Sketch of the tank.罐体简图。

Material type and grade for each type of tank component.每种形式罐体构件的材料类型和等级。

WPS to be used for each typical seam, typical large nozzle connection, typical small nozzle connections , roof seams and floor seams. 用于每种典型焊缝、典型大尺寸接管接头、典型小尺寸接管接头、典型顶板焊缝和典型底板焊缝的焊接工艺规程。

WELDING STORAGE TANKS焊接储罐

D

5.0 5.1

Shielded Metal-Arc Welding保护金属极电弧焊

SMAW GTAW SAW GMAW

Gas Tungsten-Arc Welding 钨极气体保护电弧焊 Automatic Submerged Arc Welding 自动埋弧焊 （喷射或熔滴过渡）

A combination of the above processes.上述方法的组合方法

5.2

FCAW (spray or globular transfer) process shall be limited to the following (other limitations maybe applied):

FCAW （喷射或熔滴过渡）方法限于下列焊接（可能还有其他限定情况）

A. B. C.

Weld out of pressure retaining welds in P-1 and P-8 materials.用P-1和P-8材料制造的非承压焊缝

FCAW is not acceptable for root passes of butt welds when welding from one side.当从单面焊时，FCAW不能用于对接接头的根部焊道焊接。 The root pass of butt welds in P-1 materials when welded from both sides, provided the first pass is completely removed by back-gouging prior to start of welding from the second side.当从双面焊时，采用Ｐ－１材料的对接接头的根部焊道，条件是，在开始从另一面焊接之前，要将第一道焊道彻底清根。 D. E.

External gas shielding is required except per 5.2.E.除采用5.2.E外，要求采用外部气体保护。

FCAW (spray or globular transfer) with self-shielding wire is acceptable for non-pressure retaining welds in P-1 materials that are limited to 3/8

Welding Process AWS Letter Designation 美国焊接协会焊接方法的字母表示方法：

ACCEPTABLE WELDING PROCESSES合格的焊接方法

Type of joint (i.e., full penetration, fillet, socket, partial penetration, etc.). 焊缝类型（即，全熔透焊缝、角焊缝、承插焊缝、部分熔透焊缝）

Gas Metal Arc Welding (Spray or Globular Transfer)熔化极气体保护电弧焊

inch (9.5 mm) leg length and are not subject to impact requirements.对于采用Ｐ－１材料、焊脚不超过3/8英寸（9.5mm）、且没有冲击要求的非承压焊缝，采用自保护焊丝的FCAW（喷射或熔滴过渡）是允许的。 F. G. H. I.

FCAW using short circuit transfer is prohibited.采用短路过渡的FCAW是被禁止的。

Electrode diameter shall not exceed 1/8 inch (3.2 mm).焊条直径不应超过1/8英寸（3.2mm）。

Vertical downhill welding is not acceptable.垂直向下焊是不允许的。 Wind velocity shall not exceed 5 mph in the weld area, unless the weld is sheltered from the wind.焊接区域的风速不能超过5 mph，除非焊缝有防风保护。

5.3

If GMAW - Short Circuit Transfer process is authorized for a particular application it will be limited to (other limitations may be applied):如果GMAW－短路过渡方法被允许用于特殊场合，有下列限制（可能还有其他限定情况）：

A. B.

Carbon steel only.仅用于碳钢

Root pass and weld out through 3/8 inch (9.5 mm) wall thickness. Root pass only on wall thickness greater than 3/8 inches (9.5 mm).根部焊道和壁厚超过3/8英寸（9.5mm）的焊缝。根部焊道仅为在壁厚超过3/8英寸（9.5mm）上的。

WELDING STORAGE TANKS焊接储罐

C.

Root passes can be made in any direction, but fill and cap passes shall not be made in the downhill direction below the 2 o'clock position.根部焊道可以从任意方向焊接，但填充和盖面焊道不可以在低于２点的位置向下焊接。

5.4

Other welding processes require specific written authorization from Purchaser. Submit all pertinent data and intended application of said process for evaluation. Application of these processes shall not be assumed acceptable by the Vendor-Contractor during bid preparation.其他焊接方法要求得到采购方的书面认可。提交所有的相关数据和打算使用的工艺供评价。在投标阶段，这些工艺的采用不能假设被卖方－承包商接受。

6.0 6.1 6.2

Filler metal chemistry for similar metal welds shall match that of the base metal. Similar metallurgical properties shall be produced.用于同类金属焊缝的填充金属的化学成份应与母材的相匹配，并产生相似的金属性能。

6.3

All dissimilar metal welded joints should be avoided whenever practical. When proposed, specific authorization must be obtained from Purchaser .所有异质金属接头应尽量避免。当需要时，必须从采购方获得明确授权。

6.4

Solid wires for automatic welding processes shall contain the principal elements required for the deposited weld metal. Welds deposited by the submerged arc process shall not derive any principal element from the flux.用于自动焊的实芯焊丝应含有熔敷金属所需要的主要元素。采用埋弧焊得到的焊缝不能从焊剂获得任何主要元素。

6.5

Fluxes that the flux Manufacturer recommends for single pass shall not be used for multiple pass welds.焊剂制造商推荐用于单道焊焊缝的焊剂不能用于多Filler metal shall be as specified in ASME Section II, Part C.填充金属应按ASME 第II章, C篇规定。 FILLER MATERIALS 填充材料