Method of sealing the end of a filled welding rod

[2. The method as claimed in claim 1 wherein the solid organic film comprises principally pyroxylin and alcohol.]

[3. The method of claim 1 wherein the sealing step is followed by drying said sealed ends by exposure to infrared heat.]

[4. The method of claim 1 wherein the sealant consists essentially of, in volume percent:

• ______________________________________ 2 - 20 Pyroxylin (Nitrocellulose) 60 - 80 Ether 18 - 50 Absolute alcohol 0 - 10 Camphor 0 - 10 Castor oil. ] ______________________________________

[5. The method of claim 1 wherein the sealant consists essentially of, in volume percent:

• ______________________________________ 4 - 8 Pyroxylin 60 - 80 Ether 18 - 25 Absolute alcohol Up to 5 Camphor Up to 6 Castor oil. ] ______________________________________

[6. The method of claim 1 wherein the sealant consists essentially of, in volume percent:

• ______________________________________ about 6.0 Pyroxylin about 67.0 Ether about 22.0 Absolute alcohol about 2.0 Camphor about 3.0 Castor oil. ] ______________________________________

[7. The method of closing tube rod ends comprising the steps of reducing the diameter of the ends, sealing said ends with a sealant consisting essentially of, in volume percent:

• ______________________________________ 2 - 20 Pyroxylin (nitrocellulose) 60 - 80 Ether 18 - 50 Absolute alcohol 0 - 10 Camphor 0 - 10 Castor oil ______________________________________
• drying said sealant by means of infrared heat.]

[8. A filled tube rod made by the method of claim 1.]

The method of closing an end of a filled tube welding rod comprising the steps of:

• a. reducing the transverse cross-sectional area of the end of the filled tube welding rod, and
• b. subsequently, applying to said reduced end to seal the said reduced end a solid organic film volatilizable at welding temperature to provide a contaminant-free weldment, said organic film comprising pyroxylin and alcohol.

Method of closing the end of a filled tube welding rod, comprising:

• a. reducing the transverse cross-sectional area of the end of the rod;
• b. and subsequently sealing the reduced end of the rod with solid organic material volatilizable at welding temperature, by contacting the reduced end of the rod with a solution comprising pyroxylin and alcohol.

Method of closing the end of a filled tube welding rod, comprising:

• a. reducing the transverse cross-sectional area of the end of the rod;
• b. and subsequently sealing the reduced end of the rod with solid organic material volatilizable at welding temperature, by contacting the reduced end of the rod with a solution comprising pyroxylin and alcohol and thereafter exposing the said reduced end of the rod to infrared heat to dry the reduced end of the rod.