JPS58147552A - Composite jig and tool material and its manufacture - Google Patents

Abstract

PURPOSE:To enhance the resistance to wear, seizing and thermal impact by pressing an Fe-base substrate sprayed with Cu powder contg. W, Mo, WC, VC, Mo2C, TiC, SiC or the like by applying a hot hydrostatic pressure at a prescribed temp. CONSTITUTION:Cu or Cu alloy powder is mixed with >=1 kind of powdered component selected from a high m.p. metal such as W or Mo, a carbide such as WC, VC, Mo2C, TiC or SiC, a nitride such as Si3N4, an oxide such as Al2O3, and a Co or Ni alloy with superhigh heat resistance. The powdered mixture is sprayed on an Fe-base substrate, and the substrate is pressed at 800-1,250 deg.C with a hot hydrostatic pressing apparatus to adhere the coating layer to the substrate.

Description

Detailed Description of the Invention The present invention uses high melting point metals such as W, M, etc., 10, VO, Mo10, Ti01SiO1Si, etc.
After thermal spraying Ou or Ou alloy powder containing one or more powders of carbide nitrides such as ,N, 00 base, super heat resistant alloys such as Ni base, and oxide powders such as A7403, It improves the resistance of the coating layer to peeling from the boundary layer, improves the density and mutual adhesion of the coating layer itself, and improves the thermal conductivity and slipperiness of the OU gold alloy. Carbide, electrified material, 00
In addition to the improved heat resistance, wear resistance, and seizure resistance of Ni-based heat-resistant alloys, it can be applied to sheet metal processing molds, bearings, sliding 11J parts, die-casting molds, etc., and has excellent properties without causing wear, seizure cracks, etc. The purpose of this study is to develop a new composite tool material and its manufacturing method that can share the same performance as the previous one.

High melting point metals such as W, Mo, vo, vo, slo, 8
Special compounds such as 1sNa% carbide, nitride, 00 group, Ni-based super thermal alloy, )dL@OB have excellent high m
There are examples of tools having their surfaces coated with thermal spraying such as plasma spraying or gas spraying for strength, wear resistance, corrosion resistance, etc.

However, the problem is that diffusion bonding to the base material occurs.
However, it is not always fully utilized because it may crack due to mechanical work stress or thermal shock during use.

Furthermore, OQ-based and Ni-based superheat-resistant alloys have poor thermal conductivity, which also poses problems such as being susceptible to thermal shock cracking.

In the present invention, an IFs-based alloy is used as the base material to be thermally sprayed, and the above-mentioned W, Mo alloy carbide, nitride, Oo-based super super heat-resistant alloy, Lii-based super heat-resistant alloy, Aj=On, etc. are added to the Qu or O alloy powder as the thermal spraying material. The mixture of powders is thermally sprayed and pressurized at a high temperature of 850-1200C by HIP.
Fe thread material Ou or Ou gold alloy material at the boundary or 1
・W, Mo, WO, 810, 5i for the base material
It improves the pickling properties of sN4 super heat-resistant alloy, kLmom, etc., and also contains the above-mentioned W and M in O.

It firmly holds carbides, nitrides, and super heat-resistant alloys, and is used as a material for cold and hot packaging jigs.It does not cause peeling, and has good heat resistance, wear resistance, and seizure resistance, and has a good lifespan. New cold and hot bonding jigs and materials and their method of making porcelain 1
It is something to do.

Table 1 shows the combinations of the base material and sprayed material of the material of the present invention, thermal spraying conditions, hot isostatic pressing conditions, and the effect of improving peeling resistance.

Comparative materials B<04H/H# were made from the same raw materials and the same thermal spraying method as B, OlH, and Ni, respectively, or were not subjected to the treatment.

Thermal shock test for one sheet until peeling occurs is 20■φ each.
XIO test specimens were thermally sprayed to a thickness of 2.0 mm and heated after thermal spraying to 70 mm.
゜C flame heating (20 chicken φ side) # Apply heat observation treatment of strong rice wind cooling (GOD), calculate the number of repetitions until borderline exfoliation occurs, and set that as 100 for KO'5ls-' as an index. This is what is shown.

As can be seen in other comparisons such as B i B', o -a', K -K', and H-H', the number of times the vehicle was moved before the occurrence of flaking was greatly improved.

This is due to the effect of HIP treatment on improving the bonding properties at the coating boundary and within the coating layer.

Table 2 shows the results of the seizure resistance test at high temperatures for the materials of the present invention and comparative materials.

The test pieces were cylindrical, and the end surfaces were thermally sprayed in the same way, and then the present invention material was subjected to hot isostatic pressure treatment, and the comparative material was not subjected to hot isostatic pressure treatment. At the same time, the end surface is polished to a polished steel material! IA contact, find the limit load at which seizure does not occur, and set that of each comparison material to 1.
00 and is similarly expressed as an index.

It can be seen that the critical seizure load of the material of the present invention is clearly large.

This is due to the effect of strengthening the bonding force at the thermal spraying boundary, improving the mutual adhesion of the thermal spraying layers themselves, and the excellent thermal conductivity of the densified thermal spraying layer containing 0uSOu alloy.
The effect of suppressing temperature rise on the rubbing surface is due to the effect of the Ou and Gu gold alloys.

Table 21 Table 3 shows the #-Drop test of the present invention material and comparative material until the occurrence of seizure-like cracks. (Indicates the ratio.

The sample is 20wtX 50mmWX 80mlT,
50m - Fix the test surface at 45q# with respect to the horizontal axis,
o - The number of repetitions until seizure starts due to cracks when 2°g of molten 1600c 18Ni-80r austenitic stainless steel is repeatedly dropped from above is expressed as an index, with the as-sprayed comparative material set as 100. It is something that

It can be seen that the number of repetitions until the occurrence of seizure due to cracking is clearly large for the material of the present invention.

Table 3 This shows the adhesion of the sprayed layer of the material of the present invention to the base material, the sprayed layer itself is dense and has high thermal shock resistance, and is prone to heat cracks and peeling.As a result, the relationship between the bath and the base material is This is due to the fact that the direct contact of the IgI is effectively spread out to reach higher repeat IgI numbers.

In addition, due to the densification of the sprayed layer containing O, the heat transfer rate of the material of the present invention is higher than that of the I@ portion subjected to hot water dripping.

This is due to the fact that the thermal stress generated during the process is small, and therefore the resulting peeling is prevented <<, as well as the direct contact between the bath water and the base material is effectively prevented until the number of repetitions is higher. be.

As described above, the present invention uses a Fe thread metal alloy as a base material, and W
, high melting point metals such as MO, carbides such as WG, VA, etc.
Nitride such as 1i11sli4, oxide such as Al40g,
By thermally spraying a mixture of Oo-based, lJi-based, etc. super heat-resistant alloy powder with Ou or Ou gold alloy powder, the denseness and mutual bonding properties of the sprayed layer itself are greatly improved, and the formation of a dense thermally sprayed layer containing O Due to its excellent thermal conductivity and lubricating action of O and O gold alloys, seizure becomes intermittent, making it suitable for molds, sliding parts, bearings, and high-cost casting molds for cold-open sheet metal processing. The present invention provides a new tool material and a method for manufacturing the same, which can withstand severe wear, seizure, and heat damage and have a long life.

Procedural amendment (method) July 1, 1982
! 9671 >, 'Cut sleeve 11 4h ・+11'll Close 11111. '1 Out 1/l
(Mu f1 ・S1 Higashi width ° Tocho・Dai Il 1 ward Marunouchi ZRM No. 2) To・ Ai ・50B・ l+='
! Kokono, Kosen Co., Ltd.! 111 Person's Office -1・1 νsu1 Higashiitoto r ((111-ku Marunouchi 2+'l11-2)] Ura 11 &, l elephant details

Claims (1)

[Claims] L Fe-based base material W, high melting point metal such as Mo, WO
After thermal spraying Ou or Ou alloy powder containing one or more of oxides such as lvOMO-〇, T10.5iO1SiaN4, carbides, electrified materials, 00 N1 super-thermal alloys, and oxides such as Mu-roO , a composite tool material characterized by improved adhesion of a coating layer formed by hot isostatic pressure to a base material, and improved mutual bonding properties of the coating layer itself. 2, 1! e The base material is W, high melting point metal such as Mo, WO,
vQ Mo OT Wholesale, S10, Si, N, etc. carbide, nitride, QO base, Ni base super super heat resistant alloy Al40H
O containing one kind or two or more of powders such as oxides such as
After spraying U or O alloy powder, it is pressurized in a hot isostatic press (hereinafter referred to as ■) at a high temperature of 850 to I21C to improve Wj adhesion of the coating layer to the base material and mutual bonding of the coating layer itself. A method for producing a composite jig and tool material characterized by improved properties.