That’s why the line is marked as the Ms (martensitic start) line. I was bugging Terry for pictures on Friday. I am currently using a 1 gallon crock pot that is about 12 inches long by 5-6 inches deep. Unless you are heat treating a long sword, or are quenching 100 knives at one time, you do not need to use 5 gallons of quenchant. Can't believe you missed getting a pun thread going!!! Martensitic stainless steels that we use for blades (12C27, 14C28N, 440B or C, N690, the PM steels etc) will all harden with an air quench or slow to medium oil. It's good eating if you like salmon, not my favorite fish but Silvers are good, more like trout. If the poles flip I just hope the salmon will get confused and come down to Florida. liquid nitrogen?????? by Graham Clarke | Feb 7, 2017 | Heat Treatment | 0 comments. Please contact me if you have a specific metal combination you’d like advice on. After spending the past year practising knife making, it always surprised me how many people take their quench tanks for granted. This can vary from using iced brine (extremely fast) to burying in vermiculite (very slow). Discussion in 'Shop Talk - BladeSmith Questions and Answers' started by Dr.O, Nov 22, 2013. 11" steel pipe - 1/4" wall - 30+" deep - angle for ergonomic fit going from kiln to quench tank. Oil? Recognised quench mediums are:-. Feb 26, 2017 - In this video, swordsmith Walter Sorrells shows how to make a small quench tank for water-hardening knife blades. The best thing to re purpose into a quench tank is an old electric roster oven. I think they were 120mm cans which are around 32" x 12"x 6", roughly. You do not need that much capacity for most knives. Just trying to figure out how I'm going to do the quench. Mapping was the subject, not to put a chill on your enthusiasm you understand. To explain, below is a TTT (Time Temperature Transformation) diagram for 440C. Mmmmmm. dry ice? Personally, I quench everything horizontal, but when I built my quench tank, I built it with horizontal quenching in mind. I went to my local hardware store got a 1 gallon paint can, put a hole in the rim for a thermometer. Terry Monteith has been working with me over the last couple weeks to build the quench tank I wanted, but couldn't find. What is your length limit? Have I got a project for you (where is the evil grin smiley). It's my understanding that the nuclear subs are much quieter than the old WWII subs and the magnetometers were a new tool for detecting them. What you'll be able to tell when aurora show's up overhead is there was a CME Coronal Mass Ejection. Therefore, if we were to try to straighten a warped blade before it gets to, say, 2500C it will still be soft, can be straightened, will stay straight, and will not move again as it hardens. ...Teddy. Gee Thomas, were there mega tuna too? I quench knives and swords in it. The lid is a great feature that can help smother out flare ups and the 8"x8"x3/8" base makes for a nice sturdy platform. I called it the SUPER-TANK(ED) 2000 as a joke. Terry Monteith has been working with me over the last couple weeks to build the quench tank I wanted, but couldn't find. Did it tip over because the base being narrow? Paste as plain text instead, × in the oceans mapped. The mirror image magnetic anomalies pretty well put the anti-continental drift advocates to bed. Following much discussion on Facebook recently (Jan 2017) I thought I’d put pen to paper (or at least today’s electronic equivalent) in the hope that I can answer some of the more commonly recurring questions. ), polymer? Just got my 40mm ammo can.
Frank B, and temper it to make a blade that’s usable as a knife. We were just learning how to listen for them in WWII weren't we. However, using fast speed quench oil will give a sufficiently fast quench to give a good working hardness on 1070 & higher plain carbon steels. You are using an out of date browser. I have cracked a few with fast oil!!! I'm not giving them away, I accept donations secretly. The curve on the diagram that appears between 7000C and 6000C is the knee.
You must allow the quench process to proceed through the correct stages (some of which may only be a second or two).
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