Urgent 304 stainless steel tapping internal thread with what wire tap is best

Tapping by hand is usually 30 oil.

Thread: A thread is a graphic composed of wire types, and there are many types of it. The most intuitive is the spiral protrusion with a specific cross-section made on the surface of a cylinder or conical matrix.

Threads are divided into cylindrical threads and tapered threads according to their parent shape; According to its position in the matrix, it is divided into external thread and internal thread, and according to its cross-sectional shape (tooth type), it is divided into triangular thread, rectangular thread, trapezoidal thread, zigzag thread and other special shape threads, triangular threads are mainly used for connection, and rectangular, trapezoidal and zigzag threads are mainly used for transmission; According to the direction of the spiral, it is divided into left-handed thread and right-handed thread, and the right-handed thread is generally used; According to the number of spiral wires, it is divided into single wire thread, double wire thread and multi-wire thread; The connection is mostly single-wire, and the transmission is double-wire or multi-wire; According to the size of the tooth, it can be divided into coarse thread and fine thread, etc., and can be divided into fastening thread, pipe thread, transmission thread, special thread, etc. according to different occasions and functions.

Last year, I worked as a production assistant in the company, and all the materials in the company are stainless steel 304. Do not make the diameter of the stainless steel threaded hole larger, (you should know that the outer diameter of stainless steel screws is so small as ordinary screws!) Taps:

Just use ordinary tool taps. Pin cutting fluid is the key! That's what I know at the moment"Carbon tetrachloride"You use a syringe to draw some dots on the tap, and the effect is very good!

It's easier to attack than A3, medium carbon, 45 materials! It is worth using, and carbon tetrachloride is sold in chemical stores. The thread is large and the pitch is reduced to obtain the hole diameter.

It's all talent.

1. Tool wire tap; 2。Drillable millimeter holes. 3.The metric thread diameter minus the pitch is the hole diameter; 4. The pig iron through hole is not allowed to add oil, and the yin hole can be added with butter on the tap (easy to get chips.) Hand tapping is usually 30 size oil. or used engine oil is also available.

Tapping is to use a certain torque to screw the tap into the bottom hole to be drilled to process the internal thread.

1) The orifice of the threaded bottom hole on the workpiece should be chamfered, and both ends of the through-hole thread should be chamfered.

2) The position of the workpiece clamp should be correct, and the center line of the threaded hole should be placed in the horizontal or vertical position as far as possible, so that it is easy to judge whether the tap axis is perpendicular to the plane of the workpiece.

3) At the beginning of tapping, try to put the tap right, then put pressure on the tap and rotate the wringer, when cutting into 1-2 turns, carefully check and correct the position of the tap. Generally, when cutting into 3-4 turns of thread, the tap position should be correct. In the future, it is only necessary to turn the winch and no more pressure should be applied to the tap, otherwise the thread shape will be damaged.

4) When tapping, every 1 2-1 turns of the winch should be reversed, about 1 2 turns, so that the chips are easy to discharge after breaking, and can reduce the phenomenon that the cutting edge rolls the tap due to sticky chips.

5) When encountering a screw hole that cannot be tapped, it is necessary to withdraw the tap frequently to eliminate the chips in the hole.

Tapping machine is a kind of machining equipment that processes internal threads, screws or buckles on the inner surface of the holes of various parts with different specifications such as machine shells, equipment end faces, nuts, flanges, etc. Tapping machine is also called tapping machine, thread tapping machine, thread tapping machine, automatic tapping machine, etc.

The adjustment of high-precision tapping stroke is simple, the automatic reversal device can freely adjust the tapping stroke, the shallow hole and the low-hole machining parts can also be easily adjusted, the double safety device can prevent the damage (damage) of the tapping, the spindle rotation and up and down, the advance and retreat of the special double safety clutch, the spindle can be automatically stopped, and the reversal will not damage the tool.

Tooth pitch A, B gear with A, B shaft and spindle according to the tooth pitch to advance fully matched, vertical stability, precision, particularly high, screw tapping forward and backward do not need to exert force to operate. At the same time, it is determined by the excellent processing of products, which does not cause threads of different thicknesses, and can be used for soft products such as thin sheets, light-laminated metals, and synthetic resins. At the same time, it can also be equipped with multi-axis for multi-axis synchronous machining, which greatly improves production efficiency.

Tapping is one of the important contents of fitter metal cutting, including marking, drilling, tapping and other links. Tapping can only process triangular threads, which are connection threads and are used for the connection of two or more structural parts. The processing quality of threads directly affects the assembly quality effect of the construction, so the practical teaching attaches great importance to the teaching of all aspects of threading.

The working part is a slotted length of external thread. The working part of the tap includes a cutting part and a calibration part.

Hand taps are generally composed of two sets, which are divided into head cone and two cones. The outer diameter, middle diameter and inner diameter of the two taps are equal, but the length and taper angle of the cutting part are different. The head cone is longer, the cone angle is smaller, and there are about 6 incomplete teeth for cutting in.

The second cone is shorter, the cone angle is larger, and the incomplete teeth are about 2. The hinge is a tool for turning taps, often adjustable to grip a wide range of different tap sizes.

Summary. For tapping stainless steel materials, superhard high-speed steel containing cobalt should be selected; The entering angle is related to the pitch and the number of taps, the head cone r=5° 7°, the second cone and the third cone are r=10° 20°; The calibration part is generally taken with 3 4 buckle thread lengths, and there is an inverted cone of mm; The direction of the chip flute is generally taken =8° 15°, which can control the chip flow direction, and for straight flute taps, the front end of the tap can be reground into a spiral shape; The front angle of the tap is generally p=15° 20° and the rear angle is 8° 12°.

In addition, when tapping stainless steel, it should be ensured that there is enough cooling lubricating fluid. Sulfide oil 15 20 CCL4 is usually available; White lead oil, motor oil or other mineral oil; kerosene diluted chlorinated paraffin, etc.

You can choose the stainless steel tap of Kunshan Yuntuo mold, which is more effective and convenient for you to complete the tapping.

What is the best wire tap for 304 stainless steel tapping internal thread.

Hello, dear. I have received your question, and I am carefully sorting out the relevant information, and I will answer you in detail. Please be patient.

It is better to import thread taps.

What brand. For tapping stainless steel materials, superhard high-speed steel containing cobalt should be selected; The entering angle is related to the pitch and the number of taps, the head cone r=5° 7°, the second cone and the third cone are r=10° 20°; The calibration part is generally taken with 3 closed 4 buckle thread lengths, and there is an inverted cone of mm; The direction of the chip flute is generally taken =8° 15°, which can control the direction of chip flow, and for straight flute taps, the front end of the tap can be reground into a spiral shape; The front angle of the tap is generally p=15° 20° and the rear angle is 8° 12°. In addition, when tapping stainless steel, it should be ensured that there is enough cooling lubricating fluid.

Sulfide oil 15 Syna 20 CCL4 is usually available; White lead oil, motor oil or other mineral oil; kerosene diluted chlorinated paraffin, etc. You can choose the stainless steel tap of Kunshan Yuntuo mold, which is more effective and convenient for you to complete the tapping.

It's easy to buy there.

You can buy it online.

Imported tapping.

You can find out how to buy it online.

I have a customer who is a military enterprise, and the threaded hole is the same as yours, and the method of milling threads was not very good at that time, and the taps used by OSG were also broken. At that time, I used an ordinary ER tool handle clamping, and later I changed to a flexible tapping tool holder, which was much better.

The 316 stainless steel hole of the extrusion tap M2 can be drilled.

Causes of tap breakage:

1.When tapping, pay attention to the tap and hole must be in the center and not deviate.

2.The tool to be processed must be fixed and cannot be loosened.

3.The bottom hole should not be too small, and it must be according to the standard.

4.When the hole cannot be tapped, the tap has continued to attack in the end, 5The cutting groove is poor, and there is a blockage caused by iron sticking to the tap. (If the extrusion tap is used, it is not considered).

6.With professional cutting fluids.

7.If you use too much force when tapping, it is recommended to use a flexible tapping system.

8.Inspect the material for impurities.

It's really difficult for you to tap the number of teeth, in addition to tapping, there is another method, using the machining center to mill the thread.

1: Grade 316Ti stainless steel.

Two: chemical composition.

c：≤ si≤ mn≤ p≤ s≤ ni crmo ti≥5*c%~

Three: the scope of application, the field of application:

316L stainless steel is added with MO, so its corrosion resistance, atmospheric corrosion resistance and high temperature strength are particularly good, and can be used under harsh conditions; Excellent work hardening (non-magnetic). Excellent strength at high temperatures. 316L stainless steel is an austenitic stainless steel and cannot be strengthened by heat treatment.

It has good strength, plasticity, toughness and cold formability, as well as good low-temperature properties. Due to the addition of 2% MO on the basis of Cr18Ni8, the steel is endowed with good resistance to reducing medium and pitting resistance. It has suitable corrosion resistance in various organic acids, inorganic acids, alkalis, salts and seawater.

In reducing acidic media, its corrosion resistance is much better than that of 304

Four: Overview. The corrosion resistance of stainless steel is better than that of 304 stainless steel, and it has good corrosion resistance in the production process of pulp and paper.

And 316 stainless steel is also resistant to the erosion of the ocean and the aggressive industrial atmosphere. In intermittent use below 1600 degrees and continuous use below 1700 degrees, 316 stainless steel has good oxidation resistance. In the range of 800-1575 degrees, it is better not to act continuously on 316 stainless steel, but when 316 stainless steel is used continuously outside of this temperature range, the stainless steel has good heat resistance.

316L stainless steel has better resistance to carbide precipitation than 316 stainless steel, and can be used in the above temperature range. Annealing is carried out in the temperature range of 1850-2050 degrees, then annealed rapidly, and then cooled rapidly after rolling. It has high temperature resistance, easy processing, and high strength.

316L stainless steel, no post-weld annealing is required.