CN102994913A

CN102994913A - Stator material of homogeneous mixing pump

Info

Publication number: CN102994913A
Application number: CN2012104905314A
Authority: CN
Inventors: 聂如国
Original assignee: NINGBO DURREX PUMPS CO Ltd
Current assignee: NINGBO DURREX PUMPS CO Ltd
Priority date: 2012-11-22
Filing date: 2012-11-22
Publication date: 2013-03-27

Abstract

本发明涉及一种均质混合泵的定子材料，其组成为，碳、钛、硼、铬、锰、钼、铜、钒、镍、余量为铁及不可避免的杂质。通过在本发明技术方案中加入锰和钒元素，及通过渗硼处理，提高了定子及转子的强度及耐磨性能，提高了定子的使用寿命。The invention relates to a stator material of a homogeneous mixing pump, which is composed of carbon, titanium, boron, chromium, manganese, molybdenum, copper, vanadium, nickel, and the balance is iron and unavoidable impurities. By adding manganese and vanadium elements in the technical scheme of the invention, and through boronizing treatment, the strength and wear resistance of the stator and the rotor are improved, and the service life of the stator is improved.

Description

A kind of stator material of intimate mixing pump

Technical field

The invention belongs to the mixing pump field, refer to especially a kind of stator material of intimate mixing pump.

Background technology

The intimate mixing pump is to utilize the high speed of the stator be arranged in the pump housing and the rotor under engine drives to relatively rotate and the shearing force that produces, the material that enters in the pump is carried out fragmentation and mixed uniformly pump, be widely used in the industries such as medicine, food, environmental protection.

The stator of the intimate mixing pump that now uses adopts the casting technique manufacturing, rotor and stator are in the process that material is mixed, the energy of engine is passed to material by stator to the friction of material, therefore, stator can be subject to very large friction, particularly for a long time operation, it also is the easily worn part of intimate mixing pump, often need to change, otherwise, because reduce mixing and the crushing effect of material in the situation that the gap between the stator increases because of friction.

Summary of the invention

The stator material that the purpose of this invention is to provide a kind of intimate mixing pump by the technical program, can improve the rub resistance ability of rotor and stator, effectively the work-ing life of Extending Rotor and stator.

The present invention is achieved by the following technical solutions:

A kind of stator material of intimate mixing pump, its composition is that the copper of the manganese of the boron of the carbon of 2.2-2.4%, the titanium of 0.3-0.35%, 2.3-2.5%, the chromium of 0.015-0.023%, 1.8-2.1%, the molybdenum of 1.1-1.3%, 0.5-0.8%, the vanadium of 0.5-0.65%, the nickel of 0.3-0.8%, surplus are iron and inevitable impurity by weight percentage.

Its preparation method is,

Batching, be that the copper of the manganese of the boron of the carbon of 2.2-2.4%, the titanium of 0.3-0.35%, 2.3-2.5%, the chromium of 0.015-0.023%, 1.8-2.1%, the molybdenum of 1.1-1.3%, 0.5-0.8%, the vanadium of 0.5-0.65%, the nickel of 0.3-0.8%, surplus are that iron and inevitable impurity calculate batching by weight percentage;

Batch mixing was with the powder of said mixture after adding Zinic stearas in mixer batch mixing 30-60 minute;

Compacting is suppressed 10-60 with mould and is made base substrate second under 650-750MPa;

Sintering is fired in special furnace, is 650-700 ℃ of pre-burning 2 hours in temperature at first, and then band heat is suppressed shaping under 150-200MPa pressure, at 1250-1350 ℃ of lower sintering 1-2 hour, cools to 450-480 ℃ again;

Boronising is put into boronizing agent with base substrate and is carried out the boronising processing;

Quench, quench the base substrate after will processing through boronising is incubated 2 hours in 780-850 ℃ quenching furnance after, quench minute two stages, first stage is that constant temperature is quenched to 550-580 ℃; Quench rates is no more than 15 ℃/minute, and subordinate phase is that nature quenches, be quenched to 130-150 ℃ after, enter annealing furnace;

Insulation was cooled to 130-150 after 2 hours in 550-600 ℃ of annealing furnace; Insulation is 3 hours after being tempered to 200-220 ℃ again, cooling.

Described boronizing agent is 25% borax, 11% potassium fluoborate and the graphite of surplus by weight percentage.

Described quenching medium is the salt bath quenching agent that is comprised of by 1: 1 weight ratio saltpetre and SODIUMNITRATE.

The beneficial effect that the present invention compares with prior art is:

Process by in technical solution of the present invention, adding manganese and v element, reaching by boronising, improved intensity and the wear resisting property of stator and rotor, the work-ing life of having improved stator.

Embodiment

Below describe technical scheme of the present invention in detail by specific embodiment, should be understood that following embodiment only is used for explaining the present invention and can not be interpreted as to be limitation of the present invention.

Embodiment 1

Its preparation method is,

Batching is that 2.2% carbon, 0.3% titanium, 2.3% boron, 0.015% chromium, 1.8% manganese, 1.1% molybdenum, 0.5% copper, 0.5% vanadium, 0.3% nickel, surplus are that iron and inevitable impurity calculate batching by weight percentage;

Batch mixing, with the powder of said mixture after adding Zinic stearas in mixer batch mixing 30 minutes;

Suppress, suppress under 650MPa with mould and make base substrate 20 seconds;

Sintering is fired in special furnace, is 650-700 ℃ of pre-burning 2 hours in temperature at first, and then band heat is suppressed shaping under 150MPa pressure, 1250-1350 ℃ of lower sintering 2 hours, cools to 450-480 ℃ again;

In other embodiments of the invention, employed boronizing agent and quenching medium are identical, so no longer carry out repeat specification among the embodiment afterwards.

Embodiment 2

Its preparation method is,

Batching, be that 2.4% carbon, 0.35% titanium, 2.5% boron, 0.023% chromium, 2.1% manganese, 1.3% molybdenum, 0.8% copper, 0.65% vanadium, 0.8% nickel, surplus are that iron and inevitable impurity calculate batching by weight percentage;

Batch mixing, with the powder of said mixture after adding Zinic stearas in mixer batch mixing 60 minutes;

Suppress, suppress under 750MPa with mould and make base substrate 60 seconds;

Sintering is fired in special furnace, is 650-700 ℃ of pre-burning 2 hours in temperature at first, and then band heat is suppressed shaping under 200MPa pressure, 1250-1350 ℃ of lower sintering 2 hours, cools to 450-480 ℃ again;

Embodiment 3

Its preparation method is,

Batching, be that 2.25% carbon, 0.33% titanium, 2.45% boron, 0.022% chromium, 1.92% manganese, 1.14% molybdenum, 0.65% copper, 0.62% vanadium, 0.8% nickel, surplus are that iron and inevitable impurity calculate batching by weight percentage;

Batch mixing, with the powder of said mixture after adding Zinic stearas in mixer batch mixing 45 minutes;

Suppress, suppress under 700MPa with mould and make base substrate 45 seconds;

Sintering is fired in special furnace, is 650-700 ℃ of pre-burning 2 hours in temperature at first, and then band heat is suppressed shaping under 180MPa pressure, 1250-1350 ℃ of lower sintering 1.5 hours, cools to 450-480 ℃ again;

Claims

1. The stator material of a homogeneous mixing pump is characterized in that: its composition is by weight percentage, the carbon of 2.2-2.4%, the titanium of 0.3-0.35%, the boron of 2.3-2.5%, the chromium of 0.015-0.023% , 1.8-2.1% manganese, 1.1-1.3% molybdenum, 0.5-0.8% copper, 0.5-0.65% vanadium, 0.3-0.8% nickel, and the balance is iron and unavoidable impurities.