简要说明：锐迪牌的万得模®621钴基合金耐磨焊条产品：估价：电议，规格：齐全，产品系列编号：齐全

名称：

万得模®621

用于对裂纹敏感的所有钴基合金。Polyface ®621在高温下具备优良的抗冲击性和金属对金属的耐磨损性。适用于热挤压和锻造模具、修剪机、冲床和热剪切刀片的堆焊。焊态硬度Rc 33-36，加工硬化Rc 45+。

产品规格： UNS- R30021
可用形式：手工电弧焊，气体保护焊，氩弧焊， OAW

Weld Mold 621

Weld Mold 621 is a cobalt based wear facing alloy specially designed to withstand severe impact at elevated temperatures up to 1500o F. Weld deposits show superior resistance to heat checking, spalling, chipping and especially to erosion in areas of high heat concentration.

Applications

Weld Mold 621 is used as an overlay on parts subject to oxidizing and reducing atmospheres at temperatures up to 2100o F. Excellent resistance to metal on metal wear, oxidation and thermal cycling. Hot work tools including impressions in forging dies, trimming dies, high temperature valves, punches, shear blades and extrusion dies. 621 will perform well on flat and contoured surfaces of dies subject to high temperature, impact and long production runs.

Procedure

Remove all foreign material, fatigued metal, and any sharp radii. On mild steels a pre-heat of 350°F is recommended. On higher alloy steels you must pre-heat according to base metal composition, the type of weld, and the amount of deposit. Low alloy steels may be put into service in the as-welded condition. Heat treatable steels should be tempered at 1000o F for 4 to 6 hours then cooled in still air.

Technical Data

• Available Processes: SMAW, FCAW and GTAW
• Hardness: Rockwell C 33-36, as Welded
  Rockwell C 45-48, Work Hardened
• Machinability: Use Tungsten Carbide Tools or Grind
• Heat Treatment: Non-Heat Treatable
• Class: CoCr-E