Cast Iron Repair

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This is part of an exhaust manifold off of a large CAT generator.  It was cracked in the crotch of the “Y”.  We ground out the crack to the full depth of the material then started welding the crack back up.

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The repair was completed to the satisfaction of our customer and no leaks were reported.  We do not have  an oven so this cast iron was welded slowly and in a way that protected the piece from over heating.

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Structural Steel Erecting in Sacramento

Some of you may guess the small building we are working on.  I’ll give you a hint – you can see the color of the joist used for this auto parts store.

Dan and Karl shook the deck out and tacked down in one day.

We came back about 1-1/2 months after we finished the deck to install these two awnings.

 

Water Tower Repair

We were called out by a Fire Prevention Company to repair some holes in a water tower.  Interestingly enough, they found us on the Google search.

They didn’t want a sprinkler tank any more

Several of the holes Dan was able to patch using one patch, however there were many which required one hole one patch.

several patches

It is always nice to work for a new company and have the opportunity to build a new relationship.  Once they put some paint on this tank it would be difficult to see the repairs without standing right next to it.

Dan used E6010 welding rod which is used in many different applications including gas line and water lines.  It is a nice rod to use when welding on thin material.  The patches are  10 gauge sheet metal which is the approximate thickness of the tank walls.  10 gauge is nearly as thick as 1/8 inch.

Chiller base modification

Modified the base attachments on two Chillers in Milpitas.

We drilled 12 inches into the concrete and epoxied a 5/8″ stainless steel all thread using Simpson Set XP epoxy.

The initials CEL where written by the inspector indicating the welds passed inspections.

There were 8 total locations

I used E7018 welding rod, a rod which can be used in all Structural applications were mild steel is being welded.

Certified Welding at Cell Phone Tower

We were awarded the contract to do the cell phone tower modifications at a site in LA.

First I had to become an LA Certified Welder.  That was not a problem but very involved – I had to make a special trip to LA, do a welding test I had already completed for my AWS welding certification, and a 50 question test.

The contract required us to install 12 – 1-3/4″ x8′ anchor rods and weld 6 large gussets equally around the tower 20′ high.

To install the anchor rods we had to remove the grout from under the base plate.

The rods needed to be epoxied 7′ into the existing foundation with is 22′ deep.

Before we installed the rods I cut a bevel on the end of the rod so it would go into the epoxy easier without leaving any air bubbles in the epoxy.

Rods epoxied into the foundation

Before installing the gussets I needed to remove all the galvanizing from the plates and the tower  in the weld area so the galvanizing would not contaminate the weld.

I then used a crane to “fly” the gussets in to place.  It took only about 1 1/2 hours to fly all the gussets in.

Welding the gussets in.  I bounced around the tower as I welded so the tower would not get too hot in any one area.

Welding completed and painted.  I also caulked the areas with silicone which were not welded where water could get between the gusset and the tower to keep the rust out.

All told this was a nice project and I enjoyed doing the work.  From coordinating the equipment, subcontractors, and materials to installing the anchors, welding the gussets, and getting final inspections everything what quite well.

Certified Pipe Welding in Sacramento

Dan and I installed this valve assembly Thursday, 2/3/11.

From start to finish we completed it in about 12 total man hours.

We supplied and installed 3 – 6″ flanges, 2 – 90 deg. elbows,  and about 11′ of 6″ pipe.

Dan cut into the existing pipe for the valve assembly and 6″ pipe, then we worked together to fit the pieces in.

Dan completed the project by welding everything up.

Both of us enjoy this type of work and were satisfied with the finished product.

Excavator bucket repair in Santa Cruz

I repaired this “Remu” type excavator bucket for BlueIron, Inc.  They had a job in Santa Cruz so I traveled there to work on the bucket.

The blade was obviously worn,

I cut it off and replaced with a new one.

The grinders were also worn and I hardfaced using tungsten powder.

Hardfacing is the overlaying of a harder material than the parent metal to help the existing metal last longer.  There are several types of hardfacing.  Some are designed to withstand abrasion which you would use in an application where the piece was subject to constant wear from dirt, sand, or gravel, etc.  Others are designed for impact resistance which would be used in applications where the piece is used in crushing or chipping.  The product I used is designed for high wear applications, it is a very specialized type of hardfacing and provides for excellent wearability.