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What Is The Best Wear Resistant Steel To Use In Woodyard Infeed Chutes?

Feeding logs through a woodyard debarking system Infeed Chutes, encounters tremendous wear from both high stress grinding abrasion and constant heavy impact.

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Notice The Patch Plate Located At 7 O’clock On The Discharge Area Of This Infeed Chute Into The Debarking Drum. This Area Receives Continuous Heavy Impact Wear. Vibration Stresses May Cause Chrome Carbide Overlay Plate To Fail Causing The Carbides To Break Out In Chunks.


Everyone in the wood industry from paper mill or saw mill woodyards, knows when your debarking line breaks down causing an unplanned failure; the entire system screeches to an abrupt halt.


In The Paper Industry, Downtime = Big Money Lost, You Can Never Recover.


This is not just a huge labor obligation; replacement steel is seldom on hand requiring expedited freight charges.


What Steel Is Frequently Used For Infeed Chutes?


Since its development in the mid 1960’s, AR400 has been used for abrasion and impact applications in woodyards throughout the country.

While it is a better wearing option than mild steel, commodity AR400 type versions act much like an Oreo cookie, where it is only hardened on the outer surfaces.


They are SELDOM the same hardness through the entire thickness of the steel plate.

Chrome Carbide Overlay (CCO) plates are designed to combat sliding abrasion.

They do a very good job in pure sliding abrasion applications, when there is ONLY SLIDING ABRASION AND NO IMPACT.

If you check CCO manufacturers published data online, they typically list their CCO as excellent for abrasion resistance. However, they rate their product suitable for ‘light’ or ‘moderate’ impact at best. Several websites purposely do not mention impact applications, since they cannot withstand any impact.

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When Pieces Of Your CCO Plate Have Broken Out Of The Infeed Chute And Is Now Laying In The Metal Recycling Bin; It Just Became Your Most Expensive Material. Commodity CCO Does Not Tolerate Impact And Is Rarely A Good Choice For Your Infeed Chute.


Chromeweld Ti was developed from customer requests for applications needing substantial impact resistance, that also have high abrasion wear. JADCO accomplished this by combining Titanium Carbides with Chromium Carbides in the overlay weld deposit.


First introduced by JADCO in 2017 for mining and aggregate customer applications, the durability of Chromeweld Ti has amazed people in multiple industries.


In rock crushing, Chromeweld Ti withstands 24” diameter rocks dropping 6’ onto the feeder deck, bouncing into the rock crusher 18 hours per day.

No standard Chrome Carbide Overlay can hope to withstand that abuse day after day.

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Notice How Flat And Consistent The Overlay Weld Beads Are At The Ends Of This Chromeweld Ti plate. Proper Bead To Bead Tie In Is Critical To Achieve Longer Life For Your Infeed Chutes.

The hardness of Chromeweld Ti ranges from 56 to 60 HRC; depending on the number of passes and deposit thickness.

The Chromeweld Ti deposit is a composite of Titanium Carbides and Chromium Carbides in a martensitic matrix.

Combining these two carbides is the key to surviving the constant beating debarking drum infeed chute applications must endure.

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Standard plate sizes are 90” x 120”. Overall thickness ranges from 1/8” Ti Cr overlay on ¼” mild steel and ½” Ti Cr overlay on ½” mild steel.

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You can see the fine grained Titanium Carbides, locked into a martensitic matrix. Martensite is like a tool steel, and has the ability to withstand impact. With the Titanium Carbides and Chromium Carbides providing abrasion resistance, Chromeweld Ti has proven to be excellent in challenging environments.


If you have experienced any of the following with your Infeed Chutes previously, it is time you installed Chromeweld Ti to take control of your wear headaches for good:

• Chunks of wear plate breaking out to enter your wood process system.

• Breakdowns without warning, requiring expensive downtime and impacting production.

• AR400 or similar wear plate suddenly failing after appearing in good shape for some time.

Important Details For A Successful Chromeweld Ti Installation

1. Every CCO plate must be structurally supported under the clad plate. Flexing substrate is the major cause of clad plate failure. While Huck bolts initially appear to do a decent job, the tremendous impact stresses often cause bolt heads to snap off. That is what happened to cause the plate failure seen in the second photo.

2. Use correctly spaced plug welds to weld onto the structural steel support before welding the perimeter seams. Click Here for more information on plug welds in an earlier blog post listing hole size and spacing.

3. Use 309 or 312 welding alloys for structural joining welds of the plates. Mild steel welding products will crack when they mix with the hard overlay deposit. If this happens, the weld will crack in the center, causing the plates to fail.

4. After structural welding is complete, cap the joining weld beads with Chromeweld Ti hardfacing. Since joining welds are not hard, you have to protect these welds to prevent accelerated wear.

5. Be certain to allow enough of a gap between plates to properly weld the plates to the structural steel.

6. Never leave CCO edges exposed where it would be susceptible to shear forces. They must be 100% welded – not stitch welded. And cap the perimeter joining welds with Chromeweld Ti hardfacing, as in number 4 above.

An Ounce Of Prevention vs. A Pound Of Cure

Combine your lost production, downtime, outside labor, crane rental and replacement steel costs when you have an unplanned wear plate failure. By avoiding this headache by installing the proper material up front, your improved results make any initial price difference insignificant.


Does it make any sense to use anything but Chromeweld Ti in your infeed chute applications? Not that we have seen.


JADCO has focused exclusively on delivering longer wear plate life for our customer over the last 40 years.


When you use the information in this blog post, you can understand why we are able to deliver greater performance in your most challenging applications than any material you have used previously.


Allow us to help you by calling (724) 452-5252, or email sales@jadcomfg.com today. We will schedule a meeting with one of our local wear plate specialists for a day and time that best fits your schedule.


Remember, the only thing you have to lose by not working with JADCO, are your profits.

When your infeed chute gives out, give JADCO a shout! (724) 452-5252