TW200827067A - Agitation knife tool with high thermal and wearing resistances - Google Patents

Abstract

An agitation knife tool with high thermal and wearing resistances comprises a main body, and an agitation head disposed at one end of the main body. The main body can be produced from tool steel or heat-resistant steel and the agitation head can be produced from cobalt-base alloy, nickel-base alloy or carbide powders such as WC, Cr3C2, etc. The cobalt-base alloy comprises 1.0 - 2.5 weight% of carbon, 20 - 30 weight% of chromium, 4 - 18 weight% of tungsten, 1.0 weight% of silicon and the balance of cobalt to make all elements sum up to be 100 weight%. The nickel-base alloy comprises 0.25 - 0.70 weight% of carbon, 8 - 15 weight% of chromium, 1.5 - 3.0 weight% of boron, 3.5 - 4.3 weight% of silicon and the balance of nickel to make all elements sum up to be 100 weight%. The above-mentioned materials are very beneficial to high thermal and wearing resistances so that this invention possesses good high temperature strength and wearing resistance.

Description

200827067 IX. Description of the invention: [Technical field to which the invention pertains] In particular, it relates to a stirring tool which is resistant to the present invention and which relates to a high-heat wear of a stirring tool. [Prior Art] As shown in Fig. 1, in the general mechanical precision machining process, the two metal plates and 2 are to be fused together, and the f is the metal plate 2 close to the abutment.

7' and a stirring cutter 3 is disposed on the adjacent side of the two metal plates 2, and the expansion tool 3 is usually made of high-quality poetry from the same steel material and has a mixing at the end. Head lice. In use, the sowing person Dingtong mixing tool 3 will rotate around its own axis and rotate along the adjacent sides of the two metal plates 2 'I ^ 槪 2 to make the stirring head 31 stir the metal plate 2. The adjacent sides of the panels 2 are heated by friction to generate plastic flow, and the metal sheets 2 are joined together. With the tea reading Figure 2, 3, because the surname "Mu Ma carrying the mixing tool 3 in the process of friction stir" will have high temperature, the general temperature may reach 3 〇〇 ~ 5 〇〇 ..., and the tool 3 The agitating head 31 must be rubbed against the metal plate 2 at high speed and high temperature. After the friction, the surface of the agitating head 3i and the surface of the crucible 1 wears a very severe condition. Figure 2 is made of the above high speed steel. The appearance of the cutter 3 in the absence of friction is 3, and the appearance of m 3 at a rotational speed of 1 G_pm and a frictional friction on a nameplate of 150 cm indicates that the surface of the damaged head 31 is severely worn after use. The high-temperature wear resistance to avoid rapid friction (4) causes the wear and softening of the cutter 3 to occur, which is an important issue. [Summary of the Invention] 200827067 Therefore, the object of the present invention is that the crucible also has good high-temperature strength. The tool ...,, ', I is the high heat wear resistant tool of the present invention, comprising: a body is a transfer head disposed at one end of the body, wherein the body is made of reduced or heat resistant steel material, _ Mixing head is OK, soil D gold A nickel-based alloy, or a carbide powder. ^ ^ 3〇 2〇

^ Person 2, 4 to 18% by weight of 11, 1 · 0% by weight of Shi Xi, and the same as the aforementioned Yuan 10 100% by weight. The recording base alloy includes ·· 0.25~ please focus on the carbon, 8~! 5 wt% of the road, 15 to 3 wt% of the weight... 4.3 wt% of 々' and the total of 1 〇 0 wt% of the above elements. The above carbide powder is selected from the group consisting of Tic, WC, W2c, Cr3c2, Nbc, Sic, c〇3C, c〇2c, code c, vc, AMC3, ZrC, Mg, postal, and Any combination. In the embodiment of the present invention, WC and <^3(:2 are respectively used as an example. The stirring head is a transfer plasma arc melting method (plasma). Tiansf^red arc, PTA) 'The cobalt-based alloy, nickel-based alloy or carbide powder is coated and fixed on the body, and the predetermined shape of the stirring head is processed and formed. The transfer plasma arc is melted. For the solution, please refer to the other invention patent case of the applicant in this case. The description in the certificate No. 25〇9〇4, “Carbide-containing titanium-based cutting edge and tool” is not described in detail here. The hardness of heat-resistant steel at high temperatures is better than the high-speed steel used in the previous: . . . technology, so it is suitable as the material of the invention of 200827067 material 'but simply using tool steel and heat-resistant steel as a tool, at a temperature Wear resistance, the choice of tool material is very important, and the material used in this case is made of sturdy steel or heat-resistant steel, when used with the mixing head made of alloy, nickel-based alloy or carbide. ,can Improve the tool's local temperature and grindability. Among them, the tool steel refers to the SKD series of tool steel, for example: SKDi, SKD2, SKD61 and other models of tools ^

Cooperate for the material of the ontology. The heat resistant steel is heat resistant steel in the present invention. The following six embodiments are provided for the cooperation of the body made of different materials and the spoiler head. In the first, second and fifth embodiments, the body is made of tool steel SK material, the head It is made of a cobalt-based alloy, a base alloy, and a tungsten carbide (wc) powder, respectively. In the third, fourth, and sixth embodiments, the body is made of a 718 heat-resistant steel material. It is made of 甩明基合金, nickel-based alloy, and chromium carbide (CrK2) powder. It has been found through experiments that Mingji alloy, nickel-based alloy, or carbide powder has great benefits for high-temperature wear resistance, and still has excellent mechanical properties at high temperatures, for example, above 400 ° C. The material to make the mixing head' can provide better high temperature strength to achieve good heat resistance and wear resistance. [Embodiment] The foregoing and other technical contents, features and advantages of the present invention will become apparent from the following detailed description of the preferred embodiments of the accompanying drawings. Before the present invention is described in detail, it is noted that in the following description, similar elements are denoted by the same reference numerals. Referring to Figure 4, a first preferred embodiment of the high heat resistant agitating cutter of the present invention comprises: a longitudinally extending cylindrical body 11 and a stirring head 12 disposed at the end of the body 11 and having a friction function. The body 11 is made of tool steel (model SKD61), the stirring head = is made of a base alloy, and the composition ratio of the tool steel SKD61 is as shown in the table ^ ^^m^^^tb^^ ^^ 0 Φ^^^^# The head is used as a 4 '疋 in the form of a transferred plasma arc melting method (plasma transferred ar〇5 PTA) n ^ , and is opened (a coating layer of #基合金合金, and then The coating layer can be processed into a stirring head 12 of a desired shape. 1 1 / a ratio (unit: Hui Wu 0乂,

W — ... Si Co Rockwell hardness HRC, 18 1.0 bal. A 42~60 —---J contains a body U, and the preferred embodiment of the Taiji II

Head 12, this every m 夕 to σ is in the end of the body 11 of the stir, this 浐, 1 body 11 is also made of tool steel SKD61 material yoke case and the first piece of the ware 5" into 12 is made entirely of nickel base ώ _ 在于 在于 该 该 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 2008 7 8~15 1.5~3_0 3.5~4.3 bal. 42~58

Table 4 shows the "wear amount" test of the first embodiment, the second embodiment and the first comparative example. The first example is a tool made only of the military-material tool steel SKD61, and the wear amount test is as in the prior art. The cutter 1 is rotated about its own axis, advances at a certain speed and the travel distance, and the two metal plates to be joined to each other are mixed, and the wear amount of the cutter 1 after the operation and stirring is calculated. The material of the metal plate to be stirred in this embodiment is an aluminum-12 bismuth alloy (that is, an aluminum of 88% by weight, and an alloy of 12 ❾/〇 of Shi Xi). The test condition is that the rotation speed of the cutter 1 is fixed at 500 rpm. When the speed is 5mm/s, and the test is performed under different walking distances, the wear amount is defined as: [(the weight before the tool wears - the weight after the wear) / the weight before the wear] xl〇〇% According to Si Xuguo, although the wear amount of the first embodiment will increase with the increase of the walking distance, the wear amount of the first embodiment is smaller than that of the comparative example, that is, the embodiment-utilization The body of the tool steel 11 is matched with the ground mixing head made of Mingji alloy. 2, it is better than the first comparative example: the tool 1' made of the first tool steel has better wear resistance, Γ Long wear life. In the second embodiment, at different walking distances, the same comparative example has better wear resistance. Sample 200827067 Table Fixed speed ^ 500",

Walking distance (cm) Example 1 Abrasion (%) (SKD61+ base alloy) Example 2 Abrasion (%) (SKD61+Ni-based alloy) 8.4 Comparative Example 1 Abrasion (%) (SKD61) 7.2 Table 5 shows the implementation Example 1, Example: and Comparative Example - Preparation ^ The distance measurement is performed by changing the rotational speed at the distance side (10) and the forward speed of 5 mm/s. The wear amount of the first embodiment is smaller than that of the first example, and the wear amount is 38 9% when the rotation speed is 900 and 1000 rpm, and the wear amount is the same when the rotation speed is 9 and _rpm. respectively. For 35.3%, 35.9%, in contrast, in the first example, when the speed is _ ah, the basin wear has reached 40.2%. When the speed is _rpm, the tool of the comparative example can not load the speed and the wear is not detected. The invention has a better wear resistance at the speed of Hunan ~ lOOOOrpm. In addition, the first embodiment of the present invention is compared with the second embodiment, and is represented by Table 4. It can be seen that 'the application example—using the Mingji alloy (four) mixing head, at 5 rpm with slower speed, is better than any nickel-based alloy in any running distance than the second embodiment. The mixing head 12 has better resistance. Abrasion. From the results of Table 5, at a fixed walking distance, when the rotational speed is faster (above 7 rpm), the wear resistance of the actual target 1 is better than that of the first embodiment. Therefore, it is known from the test results that the tool 实施 of the first embodiment is suitable for walking at a low speed for a long distance, and the tool 实施 of the second embodiment is suitable for the high speed to make 10 200827067 •, - -• Use 0 Table 5 Distance Speed (rpm) Example 1 Abrasion (0/〇) (SKD61+ Mingji Consolidation) Example 2 Abrasion (〇/0) (SKD61+||j Alloy) Comparative Example 1 Abrasion (〇/0) (SKD61) 700 800 900 1〇〇〇31.2 37.2 38.9 32.8 34.6 35.3 3 8.6 40.2

The invention is resistant to high heat and the mixing tool! The body π of the third preferred embodiment is made of 718 heat-resistant steel as shown in Table 6, and the ploughing head 12 of the present embodiment is also made of the aforementioned cobalt-based alloy. The body 11 of the fourth preferred embodiment of the high-heat-resistant stirring tool of the present invention is also made of 718 heat-resistant steel as shown in Table 6, and the stirring head 12 of the present embodiment uses the aforementioned nickel-based alloy. production. Table 7 is the wear amount test of the third embodiment, the fourth embodiment and the second comparative example. The second comparative example is a tool made of only a single material of 7丨8 heat-resistant steel. In this test, the material to be stirred is also aluminum. _12 矽 alloy, the test conditions are fixed rotation speed of 50 〇 TPm, forward speed of 5mm / s, the test made under different walking distance. Table 8 shows the wear amount test for changing the rotational speed at a fixed walking distance of 1 〇〇 cm and a forward speed of 5 mm/s. Table 7 shows that in Example 3 and Example 4, the wear amount is smaller than that of Comparative Example 2 at different walking distances. When the walking distance is 15 〇cm, the wear of the third embodiment is only 27.3%, compared with Compared with 4〇·2% of the second example, the second embodiment has excellent anti-wear ability. In Table 8, in Comparative Example 2, the abrasion amount has reached 4〇3% at a rotational speed of 200827067 70〇 rpm, and Comparative Example 2 can only withstand a rotational speed of less than 700 rpm. The third and fourth embodiments of the present invention have a rotational speed of 1000 rpm. At the time, the wear still does not reach 40%. It can be found from the knots of Tables VII and VIII that the third embodiment is suitable for walking a longer distance than the fourth embodiment at a rotational speed of 5 rpm, and the wear of the fourth embodiment is at a fixed walking distance and the rotational speed is different. The difference in the amount is smaller than that in the second embodiment. Therefore, the fourth embodiment is suitable for use at a high rotation speed than the third embodiment.

Table 6·· 718 heat-resistant steel composition ratio (unit: weight%)

Fe C Si Μη S Cr Mo Ni bal. 0.37 0.3 1.4 0.008 2 0.2 1 Table 7: Fixed speed 500 rpm, pre-plague 5 mm/s Walking distance (cm) 25 50 75 100 150 Example 3 Abrasion (%) (718 Heat-resistant steel + base alloy) 3.3 8.7 16.4 22.1 27.3 Example 4 Abrasion (%) (718 heat-resistant steel + nickel-based alloy) 7.2 15.6 24.1 28.8 36.2 Comparative Example 2 Abrasion (%) (718 heat-resistant steel) 8.4 16.2 - -—~^ 23.1 34.1 __:_ 40.2 Table 8: Walking distance (rpm) Example 3 Abrasion (%) (718 heat-resistant steel + base alloy) 500 · · · 7〇〇-————- 800 900 1000 22.1 26.8 32.1 34.5 38.0 Example 4 Abrasion (%) (718 heat-resistant steel + nickel-based alloy) 28.8 30.4 32.6 33.7 34.1 Comparative Example 2 Abrasion (%) (718 heat-resistant steel): ;---- 34.1 40.3 ----^ ^_:_ 12 200827067 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The body 11 of the fifth preferred embodiment is made of the above-mentioned tool steel SKD61 material, and the stirring head 12 is formed by coating a tungsten carbide (WC) powder. Table 9 is the wear enthalpy test of Example/Comparative Example 2. The third comparative example is a tool made of only a single material tool steel SKD61. In this test, the material to be agitated is 304 stainless steel, and the test condition is fixed. The speed is 5 jaws and the forward speed is 2mm/s. It is known from the test results that the fifth embodiment uses the body Uv of the SKD61 and the stirring head 12 made of the carbonized crane coating layer at any walking distance. ^ ^ ^ ^ ^ ^ ^ ^ - # # t ic ^ 77 * ^ ^ ^ ^ ^ ^ Consumability. Table 10 is a wear test for changing the rotational speed of the fifth embodiment and the third comparative example at a fixed walking distance, such as a claw and a forward speed of 2 mm/s. When the rotational speed is 500, 600, and 700 rpm, the wear amounts of the fifth embodiment are 54, 6.4, and 9.1%, respectively, which are less than 1%, and the comparative example 3 is greater than 1%.尧9: Fixed speed 500rpm, forward speed 2mm/s Walking distance (cm) 5 10 15 20 Example 5 Abrasion (%) (SKD61+WC) 2.1 5.4 8.2 11.5 Comparative Example 3 Abrasion (%) (SKD61) 9.1 12.5 14.2 17.3 Table 10: Walking distance 10cm, negative one-entry speed 2mm/s Speed (rpm) 500 600 700 Example 5 Abrasion (%) (SKD61+WC) 5.4 6.4 9.1 Comparative Example 3 Abrasion (%) (SKD61 12.5 12.9 18.2 13 200827067 The high heat wear resistant knives of the present invention: ... see the corps of the knives 1 of the preferred embodiment of the body 11 is the use of the aforementioned 718 埶 埶 姑 姑 她 她 她 她 她 她 她 她 她The stirrer 12 is formed by coating and forming a powder of chromium carbide (Cr3c2) powder into a dust coat. Table 11 is the No. 5 formula of the No. 6 and Comparative Example 4, and the second comparative example is a tool made of only a single material 718 heat-resistant steel, 1 . In this case, the breaking material was 304 stainless steel, and the test conditions were a fixed rotation test, and the forward speed was 2 mm/s, and the abrasion amount was tested at different walking distances. The second is the test of the sixth and the comparative example four at a fixed walking distance of 1 〇 coffee and forward speed: 2 mm / s, changing the rotational speed. The tool made of 7i8 ^ steel with chromium carbide ((4) 2) coating has better wear resistance and longer wear life than the tool made of 718 heat-resistant steel. Walking distance (cm) 5 -—^ 10 —15 —--- 20 Example 6 Abrasion (%) (718 Heat-resistant steel + Cr3C2 ) 2.4 4.2 7.6 η, Comparative Example 4 Abrasion (%) (718 heat-resistant steel) 11.5 13.7 16.1 18.2 Rabbit degree 2mm/s Table 12: Walking distance 10cm 'Before ^g grinding 2mm/s Speed (rpm) 500 6〇〇700 Example 6 Abrasion (%) (718 Heat-resistant steel + Cr3C2) 4 6.1 8.3 Comparative Example 4 Abrasion (%) (718 heat-resistant steel) 13.7 H.1 14.9 —_- 14 200827067 However, the above description is only a preferred embodiment of the present invention, and the present invention is not limited thereto. The scope of implementation, that is, the simplicity of the invention and the modification of the scope of the invention, and the scope of the invention, are still within the scope of the invention. [Simple description of the drawing] The block is entangled with a partial view of the front side of the friction; Figure 3 is a side view similar to Figure 2, showing the appearance of the knife 1; and the visual cutter is agitating Figure 1 Yes - a three-dimensional map showing the setting relationship of the metal plates that are familiar with the mixing of the tools; and the agitating diagram, showing the conventional mixing tool in the unillustrated 'showing the high-heat-resistant sandalwood cutting tool of the present invention

15 200827067 .:.. - . . . : - [Main component symbol description] - .... Stirring head 1···•......, mixing tool 12 • 11......... body

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Claims (1)

200827067, the scope of application for patents: a kind of two-heat-loss knives, including · and from the beginning of the base - the body 'from the tool steel or heat-resistant 由 made of a mixing head, fixedly placed on the body of gold, nickel base The cobalt-based alloy is made of an alloy or a carbide powder. The carbon-containing apricot is 1.0 to 2.5% by weight. / > μ ~ 3 〇 weight ❶ / 〇 chromium, 4 ~ 18% 篁% of tungsten, 丨. 0% by weight, '100% by weight of cobalt; and the nickel-based alloy with the w element Including: 0 · 2 5 ~ 〇 · 7 〇 weight 〇 / 夕山里 ^呶, 8~15% by weight of chromium, 1.5~3.0% by weight of boron, 3·5~ / , ... · 3 reset. /〇, and 100% by weight of nickel combined with the aforementioned elements. 2. The high-heat-resistant mixing knife according to item i of the patent application scope, wherein the carbide powder is selected from the following: 'WC^ W2C -Cr3C2VNbC VSiCvc〇3C . Co2C ^ Νΐ3〇. VC, A14C3, ZrC, M〇2c, b4c, and combinations thereof. 3. According to the high-heat-resistant cutting tool described in the first or second patent scope of the patent application, wherein the stirring head is covered by a transfer plasma arc melting method to cure a condensed base alloy, a nickel-based alloy or a barrier powder. Connected to the body for processing. 17