CN1419059A

CN1419059A - Method for making edge-folding breachles steel-copper alloy thrust bearing

Info

Publication number: CN1419059A
Application number: CN 02153978
Authority: CN
Inventors: 胡长安
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-12-09
Filing date: 2002-12-09
Publication date: 2003-05-21
Anticipated expiration: 2022-12-09
Also published as: CN1176305C

Abstract

The present invention relates to a production method of flanged unnotched steel copper alloy thrust shaft sleeve, and is characterized by that on the spread steel material for making thrust shaft sleeve component the copper alloy powder is sintered, and thermally rolled and compacted to obtain the bimetal spread shape material for making said thrust shaft sleeve, said material can be rolled up to form opened circular cylinder, then rolled and flange so as to obtain said invented flanged unnotched steel copper alloy thrust shaft sleeve.

Description

The manufacture method of flange non-notch steel Cuprum alloy thrust bush

Technical field

The present invention relates to a kind of use rotary forging press hot rolling and make bimetal thrust bush part section bar, the part section bar belongs to the manufacturing of bimetal part section bar and the production technical field of its deep processing being made mechanical parts through the manufacturing technique method that rolls thrust bush that rolls, the spreading flange is finally made steel, sintered copper alloy bimetal turnup ring does not have triangular cut.

Background technique

The bearing that uses in various rotary machines, the existing radial load that is born has the bearing member of end thrust again, just needs to install thrust bearing.This bearing have by two semicircles combined with two class thrust bush structures cylinder type.The thrust bush of cylinder type uses extremely extensive in mechanical industry.Be example with the thrust bush that uses on the tracked construction equipment, it is at track roller, holder sprocket wheel, guide wheel, and the use on the parts such as driving wheel is the typical case the most, and the minimum consumption of wanting is 24/, and annual consumption reaches millions of more than.The tratitional technology that this series products is used morely on manufacturing process mainly contain two kinds (with thrust side and sleeve be connected to inlaid type except): a kind of is the thrust bush of friction toe, as the U.S. Pat 3 that proposed in 1970,624,811, this invention be with the bimetal plate punching out become the thrust annulus and the axle sleeve that rolls into a bimetal plate through inertia friction weld and the product that forms through cutting; Another kind is that nineteen ninety Chinese patent ZL90107116 rolls into axle sleeve with a bimetal plate, makes the thrust side and makes after cutting through turning over again.Above-mentioned two series products common deficiency on making is the Cuprum alloy CuPb10Sn10 material layer of sintering bimetallic plates, its relative density is low to be below 96%, do not reach the requirement of mechanical parts relative density minimum 98%, this is because tratitional technology is with due to the densification of cold rolling technology; Secondly the product deficiency of U.S. Pat 3,624,811 friction toes is that its stock utilization that thrust ring adopts the bimetal plate to be washed into has only 40～50%, and the following process operation of multi-pass also need be arranged; The deficiency of Chinese patent ZL90107116 is that what to finish behind the flange is blank once more, also has many cutting operations, and main is to also have a vee on the annulus of flange, and its structure is imperfect.

Summary of the invention

The manufacture method that the purpose of this invention is to provide a kind of flange non-notch steel Cuprum alloy thrust bush, this method makes on the turnup ring of the bimetal thrust bush of making does not have triangular cut, has structural integrity and good using effect and simple low cost manufacture method.The present invention is the steel material spread material blanking of the elder generation of realization like this with bimetal thrust bush part; cloth copper alloy powder on the steel material; at the wide not cloth of flange bending part 3～8mm powder; and send sintering in the sintering furnace of shielding gas atmosphere to; 780 ℃～900 ℃ of temperature; 10～30 minutes time, the copper alloy layer behind the sintering is carried out the hot rolling densification on rotary forging machine, 550 ℃～780 ℃ of the temperature of hot rolling.To make bimetal thrust bush spread material section bar and roll into the opening cylinder, cylinder is placed on and places in the mould on the rotary forging press, and the spreading flange forms.

Advantage of the present invention is the steel one sintered copper alloy bimetal thrust bush that utilizes the present invention to make, it is the bimetal part section bar of at first making hot rolling, it is the highest that this makes consistency, the stock utilization of copper alloy layer all mention, and the cutting amount is few, material-saving, saving of labor, province's process equipment; Its Thrust ring of thrust bush and axle sleeve are individual configurations, do not have the potential safety hazard on using, and do not have triangular cut, structural integrity on the Thrust ring, are that a kind of use is reliable, material-saving, province's cutting, province's equipment, manufacturing efficiency height, economic technology remarkable benefit.

Description of drawings

Fig. 1 is the schematic representation of traditional bimetal thrust bush

Fig. 2 is the expansion bimetal section bar schematic representation of bimetal thrust bush of the present invention

Fig. 3 is the elevational schematic view of Fig. 2

Fig. 4 is a manufactured good schematic representation of the present invention

As Fig. 1～shown in Figure 4, thrust bearing also will bear thrust load except bearing radial load, its structure comprises axle sleeve 1 and the turnup ring 2 that bears two kinds of load respectively, on the turnup ring of traditional bimetal thrust bush vee 4 is arranged, its structure is imperfect.The present invention is earlier with used steel plate material 6 blankings of part, and the used steel plate material blanking of part is of a size of the expansion shape size of flange thrust bush.The loose copper alloy powder of putting on steel plate material again, cloth powder not on the flange bending 3～8mm of 5 places width.It is fed in the sintering furnace of shielding gas atmosphere again and carries out forming and sintering, the temperature of sintering is 780 ℃～900 ℃, and the time is 10～30 minutes.The bimetal part behind the sintering is launched the shape material again and place on the rotary forging press copper alloy layer 3 hot rolling densifications, the temperature of hot rolling is 550 ℃～780 ℃ 2～8 seconds of spreading time.Again the expansion shape material webs of part after the hot rolling densification is made the opening cylinder, the expansion shape material of the bimetal part that is about to make rolls into the opening cylinder.The opening cylinder is placed on places spreading flange on the rotary forging machine in the floating die assembly, turn over the bimetal thrust bush of making no triangular cut on the turnup ring.Steel plate material can be selected thickness and material as required for use, and thickness is more than 0.60 millimeter usually, and material is selected the low-carbon abrasion resistant steel for use.For guaranteeing bearing accuracy, bearing is placed on carries out finishing shape on the punch press, the manufacturing of this bearing has not generally had cutting again except the blanking of steel plate punch press, milling thrust side oil groove, drilling sleeve oilhole and chamfering, can reduce manufacture cost about 40%.Described shielding gas atmosphere comprises 70% hydrogen and 25% nitrogen, to prevent the Cuprum alloy oxidation.

In a word, the final products that method of the present invention is only promptly finished with a spot of cutting, material-saving, saving of labor, province's process equipment, the consistency of copper alloy layer, stock utilization all are higher than traditional bimetallic plates, band technology, turnup ring and axle sleeve are that integrative-structure does not have the potential safety hazard in the use, do not have triangular cut, structural integrity on the Thrust ring.Be that a kind of use is reliable, the product and the manufacturing technique method thereof of material-saving, province's cutting, province's equipment, manufacturing efficiency height, economic technology remarkable benefit.

Claims

1; a kind of manufacture method of flange non-notch steel Cuprum alloy thrust bush; it is characterized in that: the used steel plate material blanking of part is of a size of the expansion shape size of flange thrust bush; the loose copper alloy powder of putting on steel plate material again; cloth powder not on flange bending part 3～8mm width; again it is fed in the sintering furnace of shielding gas atmosphere and carries out forming and sintering; the temperature of sintering is 780 ℃～900 ℃; time is 10～30 minutes; again the bimetal part behind the sintering being launched the shape material places on the rotary forging press the densification of copper alloy layer hot rolling; the temperature of hot rolling is 550 ℃～780 ℃ 2～8 seconds of spreading time; again the expansion shape material webs of part after the hot rolling densification is made the opening cylinder; the opening cylinder is placed on places spreading flange on the rotary forging machine in the floating die assembly, turn over the bimetal thrust bush of making no triangular cut on the turnup ring.

2, the manufacture method of flange non-notch steel Cuprum alloy thrust bush according to claim 1 is characterized in that: the expansion shape material of the bimetal part made is rolled into the opening cylinder.