CN102151936A

CN102151936A - Grind shoe manufacture method and tool

Info

Publication number: CN102151936A
Application number: CN2011100415504A
Authority: CN
Inventors: 梅宗斌; 梅宗清; 王永充
Original assignee: LUZHOU CHUANYOU DRILING EQUIPMENT CO Ltd
Current assignee: LUZHOU CHUANYOU DRILING EQUIPMENT CO Ltd
Priority date: 2011-02-21
Filing date: 2011-02-21
Publication date: 2011-08-17
Anticipated expiration: 2031-02-21
Also published as: CN102151936B

Abstract

The invention discloses a grind shoe manufacture method which comprises the steps as follows: a grind shoe body is manufactured by carbon steel or tungsten carbide; a surfacing layer on the grind shoe body is arranged at a downward welding position; a workpiece is preheated by flame firstly; then a welding tool is mounted to clamp the grind shoe body; austenite stainless steel or copper alloy is selected as the material of the surface of the welding tooling contacted with the grind shoe body and the surfacing layer; YD hard alloy welding rods are used for implementing resurfacing welding on the grind shoe body; after the welding is completed, an inner blocker is loosened to take off the welding tool. According to the grind shoe manufacture method, the welding is convenient, and the resurfacing welding forming is good; and the grind shoe become a finished product without secondary processing after the welding is completed.

Description

Junk mill manufacture method and frock

Technical field

The present invention relates to the preparation method of oil exploitation underground work workpiece, specifically a kind of manufacture method that is used for the junk mill of down-hole grinding, and the frock that is used for this method.

Background technology

Junk mill belongs to a kind of workover tool, is made of body and carbide alloy section, and the carbide alloy section is welded on bodies top, has the high advantage of grinding efficiency.The method of making has following two kinds: a kind of is the body of just reserving one section tubbiness when the junk mill body is made, external mold as pile-up welding hard alloy, this section external mold has just connected together with the alloy of built-up welding after welding is finished, and the effect when junk mill uses has just descended greatly like this; Another kind method is to add a frock in order to built-up welding in the junk mill periphery after the junk mill body is finished, and removes frock with cutting working method again after welding is finished, and has so not only bothered but also uneconomical.

Summary of the invention

The junk mill manufacture method and the frock thereof that the purpose of this invention is to provide a kind of handling ease.

Technical scheme of the present invention is as follows:

A kind of junk mill manufacture method comprises the steps:

A, make the junk mill body with carbon steel or tungsten carbide;

B, make the overlay cladding on the junk mill body be in the downhand position, at first with the pre-heated work pieces of flame, load onto welding tooling then and clamp the junk mill body, and it is identical with the outer side clearance of junk mill bodies top to regulate the built-up welding contact layer that makes the frock inboard, this welding tooling comprises can be enclosed within this external frock body of junk mill, has the interior card that is used to clamp the junk mill body in the frock body, interior cartoon crosses screw rod and nut is installed on the frock body, the holding screw of regulating the welding tooling position also is installed on the frock body, and welding tooling is austenitic stainless steel or copper alloy with the material of the face that the junk mill body contacts with overlay cladding;

C, on the junk mill body, carry out built-up welding, unclamp interior card after welding is finished, take off welding tooling and get final product with YD type carbide electrode.

The invention has the beneficial effects as follows: because the welding of YD type hard alloy composite material surfacing welding belongs to gas brazing, the tyre body alloy of this welding rod has good wellability to carbon steel and tungsten carbide particle at a certain temperature, tyre body alloy is relatively poor to the wellability of austenitic stainless steel under same temperature, and is relatively poor to the wellability of copper alloy.Therefore, utilize this difference, the material that the material of choose reasonable junk mill body and frock contact with overlay cladding, make alloy welding deposit and junk mill body firm welding can not connect together with frock again, convenient welding, built-up welding are shaped, after built-up welding is finished, frock unclamped to take off get final product, be finished product after junk mill has welded and need not secondary operations, improved the junk mill working (machining) efficiency, reduced production cost.

Description of drawings

The present invention will illustrate by example and with reference to the mode of accompanying drawing, wherein:

Fig. 1 be the embodiment of the invention in weld deposit process, the installation diagram of junk mill body and welding tooling.

Fig. 2 is the schematic diagram of the welding tooling that uses of the present invention.

The specific embodiment

Specific embodiments of the invention 1, a kind of junk mill manufacture method comprises the steps:

One, material is prepared:

1, uses steel alloy 35C _RM _OOr tungsten carbide is made junk mill body 9;

2, prepare welding tooling, this frock comprises the frock body 2 that can be enclosed within outside the junk mill body 9, and frock body 2 is made of jointly three block parts, and forms a ring-type integral body.Have 3 (or a plurality of) the interior card 3 and the wild card 4 that are used to clamp junk mill body 9 in the frock body of trisection, interior card 3 is used to tighten the junk mill body, in this example wild card 4 be mainly used in three block parts connect do as a whole, and as the location benchmark of interior card 3; Interior card 3 and wild card 4 are installed on the frock body 2 by screw rod 6 and nut 5, and the holding screw 1 of regulating the welding tooling position also is installed on frock body 2, and the material of the built-up welding contact layer 7 of frock body inboard is an austenitic stainless steel;

Two, welding:

As shown in Figure 1, the first step is horizontal junk mill body 9 tops; Second step was preheated to about 600 ℃ junk mill body 9 tops with flame, was used to obtain better built-up welding effect, and produced excessive stress when avoiding installing additional the laggard windrow weldering of frock; The 3rd step was placed in frock on the junk mill body 9, with holding screw 1 frock was fixed on the junk mill body 9, and regulated holding screw 1 and make the built-up welding contact layer 7 of frock inboard identical with junk mill body 9 top outer gaps, and the thin and thick of assurance overlay cladding is even; In the 4th step, on the junk mill body, carry out built-up welding with YD type hard alloy composite material surfacing welding; The 5th step, after finishing, welding unclamps interior card, take off welding tooling.Finish welding.

Tool structure in the foregoing description as shown in Figure 2, frock body 2 usefulness carbon steels are made, built-up welding contact layer 7 is＞the austenitic stainless steel overlay cladding of 5mm, car evenly was cut into trisection along axis 12 with body with wire cutting method after built-up welding was finished after finishing after given size, boring, tapping are finished, and with interior card 3, wild card 4, screw rod 6 and nut 5 body of trisection was combined into round frock body 2.Card 3 position in can regulating by the cooperation of screw rod 6 and nut 5, interior card 3 usefulness austenitic stainless steels are made.On frock body 2, also have holding screw 1, be used to adjust the relative position of frock body 2 and junk mill body 9.

Claims

1. a junk mill manufacture method comprises the steps:

Make the junk mill body with carbon steel or tungsten carbide;

Make the overlay cladding on the junk mill body be in the downhand position, at first with the pre-heated work pieces of flame, load onto welding tooling then and clamp the junk mill body, and it is identical with the outer side clearance of junk mill bodies top to regulate the built-up welding contact layer that makes the frock inboard, this welding tooling comprises can be enclosed within this external frock body of junk mill, has the interior card that is used to clamp the junk mill body in the frock body, interior cartoon crosses screw rod and nut is installed on the frock body, the holding screw of regulating the welding tooling position also is installed on the frock body, and welding tooling is austenitic stainless steel or copper alloy with the material of the face that the junk mill body contacts with overlay cladding;

On the junk mill body, carry out built-up welding, unclamp interior card after welding is finished, take off welding tooling and get final product with YD type carbide electrode.

2. the frock of using in the described junk mill manufacture method of claim 1, it is characterized in that: this welding tooling comprises can be enclosed within this external frock body of junk mill, has the interior card that is used to clamp the junk mill body in the frock body, interior cartoon crosses screw rod and nut is installed on the frock body, the holding screw of regulating the welding tooling position also is installed on the frock body, and welding tooling is austenitic stainless steel or copper alloy with the material of the face that the junk mill body contacts with overlay cladding.